ICE Detainers Explained: What to Do If a Loved One Is Held

What Is an ICE Detainer?

An ICE detainer is a written request from U.S. Immigration and Customs Enforcement asking a local jail, a state prison, or another law enforcement agency to hold a person in custody for up to 48 additional hours beyond the moment they would otherwise be released. The purpose of that additional hold is to give ICE time to take physical custody of the person and begin removal proceedings.

Detainers are issued on a form called the I-247A, Immigration Detainer Notice of Action. The regulation that governs the detainer process is found at 8 C.F.R. 287.7, which draws its authority from Section 287(d)(3) of the Immigration and Nationality Act.

I have helped many families in Massachusetts whose loved ones have been held on detainers, and I want to be direct with you about something important. An ICE detainer is a request from an immigration officer. It is not a warrant signed by a neutral judge, and it does not automatically give a jail the legal authority to extend someone's detention. Federal and state courts have repeatedly examined this issue, and the rules around detainers have shifted significantly in recent years, including a major class action settlement that took effect on March 4, 2025.

If a loved one has been held on an ICE detainer, or if you are worried that one might be issued, this guide walks through what a detainer is, how long someone can be held, what your rights are in Massachusetts, and what practical steps you can take today.

How a Detainer Works in Practice

A detainer does not appear out of nowhere. It is almost always triggered by a person's contact with local or state law enforcement, most often through a criminal arrest, a traffic stop, or a booking at a county jail. When fingerprints are taken and submitted to federal databases, that information is shared with ICE. If ICE believes the person is removable, it may send a Form I-247A to the local agency holding the person.

The detainer form has several boxes the officer may check to explain the basis for the request. These include a prior final order of removal, pending removal proceedings, biometric evidence that the person is removable, or statements made by the person. A Warrant of Arrest of Alien (Form I-200) or a Warrant for Arrest in Removal Proceedings (Form I-205) is typically attached.

Once the detainer is lodged, the jail is asked to do two things: notify ICE at least 48 hours before the person would otherwise be released, and hold the person for up to 48 additional hours after the release time so ICE can pick them up.

The 48-Hour Rule: What It Really Means

The 48-hour rule is the most misunderstood piece of detainer law. Under 8 C.F.R. 287.7(d), a law enforcement agency is asked to maintain custody of the person for a period not to exceed 48 hours, excluding Saturdays, Sundays, and federal holidays, beyond the time the person would otherwise have been released.

Two things matter here. First, the 48-hour clock does not start at booking. It starts at the moment the person would otherwise go free, such as after posting bail, after the criminal case is dismissed, or after completing a sentence. Second, weekends and holidays do not count toward the 48 hours. A person whose criminal case resolves on a Friday afternoon could, in theory, be held into the middle of the following week before the detainer expires.

After those 48 hours, if ICE has not taken the person into federal custody, the local agency is not supposed to continue holding them on the detainer alone. This is the point where constitutional and state law issues come in.

Massachusetts Law: The Lunn Decision

Massachusetts is one of the most protective states in the country when it comes to ICE detainers, and the reason is a 2017 decision from our Supreme Judicial Court called Lunn v. Commonwealth, 477 Mass. 517.

In Lunn, the SJC considered whether a Massachusetts court officer could hold a person who had already been released on his criminal case solely because ICE had lodged a civil detainer. The SJC ruled that Massachusetts state law provides no authority for state or local officers to arrest or hold a person solely on the basis of a federal civil immigration detainer beyond the time that person would otherwise be entitled to release.

In other words, in Massachusetts, if the only reason a sheriff or police officer is holding someone is a civil ICE detainer, that hold is not lawful under state law. The person must be released.

That does not mean ICE cannot arrest people in Massachusetts. ICE agents can still come to a jail, a courthouse, a workplace, or a home and make their own arrest, as long as they have their own lawful basis for doing so. What Lunn means is that Massachusetts state and local officers cannot be turned into immigration enforcement agents through a detainer.

Local Sanctuary Policies

On top of Lunn, many Massachusetts cities and counties have adopted their own trust acts or sanctuary policies that further limit cooperation with ICE. Boston's Trust Act, originally enacted in 2014 and strengthened in 2019, prohibits the Boston Police Department from honoring civil immigration detainers and restricts the department's cooperation with ICE on civil immigration matters, while still allowing cooperation on certain serious public safety investigations.

According to public statements from Boston Police Commissioner Michael Cox in early 2026, the Boston Police Department received 57 civil detainer requests from ICE during 2025 and declined to act on them, citing the Trust Act. The policy has drawn legal challenges from the federal government, and the Department of Justice filed a lawsuit against the City of Boston in September 2025 seeking to invalidate its sanctuary ordinance. That lawsuit is pending as of this writing, so policy in this area continues to evolve.

The Gonzalez v. ICE Settlement: A Major 2025 Change

On March 4, 2025, a five-year class action settlement in Gonzalez v. ICE took effect. The case challenged ICE's practice of issuing detainers based on unreliable database searches, without any neutral review of probable cause. The settlement applies to detainers issued through ICE's Pacific Enforcement Response Center, which historically issued detainers in a large number of states and territories.

Under the settlement, during the hours when ICE relies on the Pacific Enforcement Response Center to issue detainers, ICE may only send local jurisdictions a Request for Notification of Release rather than a detainer requesting continued custody. A Request for Notification asks the jail to tell ICE when the person will be released so ICE can come pick them up, but it does not ask the jail to hold the person any longer than it otherwise would.

The settlement also requires that when ICE does issue a detainer asking for continued custody, the officer must create a written probable cause statement that identifies the specific databases checked and the information relied upon. ICE cannot rely solely on a database hit to justify a detainer.

What to Do If a Loved One Is Held on an ICE Detainer

If your partner, parent, child, or friend has been detained and you suspect there is an ICE detainer, time matters. The 48 hour clock can be short, and the choices made in the first day often shape the rest of the case. Here is what I generally recommend.

1. Try to Locate Them

If you believe your loved one is still in local or county custody, call the jail and ask. If you believe they have already been transferred to ICE, use the ICE Online Detainee Locator System at locator.ice.gov. You will need the person's A-number if they have one, or their full name, country of birth, and date of birth. Write down every case number, booking number, and facility name you find, because you will need them for an attorney.

2. Do Not Answer Questions Without a Lawyer

A detained person has the right to remain silent and the right to speak with an attorney. Anything they say to ICE officers, jail staff, or anyone else can be used against them in immigration court. Tell your loved one, as clearly and calmly as you can, not to sign anything and not to answer questions about where they were born, how they entered the country, or their status. They should say only that they want to speak with a lawyer.

3. Get a Criminal Defense Lawyer and an Immigration Lawyer Talking

If there is still a criminal case, the criminal defense lawyer and an immigration lawyer need to coordinate. Decisions about bail, plea offers, and sentencing can all affect what happens with the detainer and with any future removal case. Posting bail on a criminal case while a detainer is active can sometimes mean that the person is transferred to ICE custody instead of going home. An immigration lawyer can walk you through what to expect.

4. Ask Whether the Hold Is Actually Lawful

In Massachusetts, because of Lunn, a hold based only on a civil ICE detainer is not authorized under state law. If a Massachusetts sheriff is holding someone past their release time only because of a detainer, that hold is vulnerable to a legal challenge. Your attorney can evaluate whether to file a motion to release.

5. Gather Documents Right Away

Start collecting documents that may be useful in a future immigration case or bond hearing. These include identity documents, proof of how long the person has lived in the United States, tax returns, pay stubs, school and medical records for children, letters from employers, clergy, and community members, proof of U.S. citizen or lawful permanent resident family members, and records of any domestic violence or crime victimization. Keep everything in one folder.

6. Prepare for a Possible ICE Custody and Bond Hearing

If ICE does take your loved one into custody, the next question is usually whether they can be released on an immigration bond. Some people are eligible for a bond hearing before an immigration judge, while others are subject to mandatory detention because of their criminal history or arrival status. A hearing is not automatic. In most cases, an attorney must request it. Preparing evidence of community ties, steady employment, and family support can make a significant difference in whether a judge grants bond and at what amount.

Who Issues Detainers and Where People Are Held

Detainers are issued by ICE officers assigned to Enforcement and Removal Operations, often through regional offices or specialized teams that monitor local jail bookings. They are most often lodged at county jails, state prisons, and federal custody facilities.

Once ICE takes custody, people from Massachusetts are typically moved between several detention facilities. Some are held in county jails that contract with ICE, while others are transferred to facilities out of state. Transfers can happen quickly and without notice to the family, which is one of the most painful parts of the process. Having an attorney on the case early makes it easier to track your loved one and to continue representing them across facilities.

Common Mistakes That Hurt Detainer Cases

After years of handling these cases, I see the same mistakes over and over. Each of them is understandable. All of them can be avoided with good counsel.

• Posting bail without immigration advice: On the criminal side, posting bail feels like progress. On the immigration side, it can be the moment ICE takes custody. Always have both the criminal and immigration picture in mind before paying bail on a case with a detainer.
• Signing stipulated removal or voluntary departure paperwork: ICE officers sometimes offer papers that look like a shortcut home. In many cases, signing gives up important rights to fight the case. Do not sign anything without reading it carefully with an attorney.
• Talking to ICE officers without a lawyer: Interviews at the jail, over the phone, or in the field are not casual conversations. Everything is written down and used in removal proceedings.
• Waiting to call a lawyer: The 48-hour window moves fast. Every hour of delay reduces options. Calling an attorney on day one is almost always better than waiting.
• Assuming a detainer means automatic deportation: It does not. A detainer is the start of a process, and many people win their cases or are released on bond.

What Rights Does a Person Have While in Custody?

Everyone in ICE custody, regardless of immigration status, has certain basic rights. These include the right to remain silent, the right to speak with an attorney at the person's own expense (there is no appointed counsel in most immigration cases), the right to contact their consulate, the right to reasonable medical care, and the right to a hearing before an immigration judge if they are placed in removal proceedings.

Those rights are only meaningful if they are used. Family members on the outside play a crucial role by helping the detained person remember what to say and what not to say, by connecting them with an attorney, by gathering documents, and by showing up for bond and immigration court hearings.

Frequently Asked Questions About ICE Detainers

Getting Help: How an Immigration Attorney Makes a Difference

ICE detainers sit at the intersection of criminal law, constitutional law, and immigration law. Each case turns on the specific facts: what ICE paperwork was lodged, when the person would otherwise be released, what local policy applies, what criminal charges are pending, and what immigration history the person has. An experienced immigration attorney can do several things that a family member alone cannot.

A lawyer can obtain copies of the I-247A form and any attached warrants, read them carefully, and determine whether the hold is lawful. A lawyer can contact ICE deportation officers, coordinate with the criminal defense attorney, prepare for an initial master calendar hearing, and request a bond hearing before an immigration judge when appropriate. A lawyer can also evaluate long-term relief, such as asylum, cancellation of removal, adjustment of status through a family member, a U-visa, a T-visa, or withholding of removal, and begin building that case from day one.

If cost is a concern, there are legal aid programs in Massachusetts, including the PAIR Project (Political Asylum Immigration Representation Project) and several law school immigration clinics, that help detained immigrants. PAIR is a Boston-based nonprofit that has long provided free legal orientation and representation to detained immigrants in Massachusetts. A detained loved one is not alone, even if the family cannot afford a private attorney.

Final Thoughts

ICE detainers are scary. They appear suddenly, they come with tight deadlines, and they can pull families apart without warning. But they are also legal documents that must follow rules. In Massachusetts, those rules include the Constitution, federal regulations like 8 C.F.R. 287.7, the Supreme Judicial Court's decision in Lunn v. Commonwealth, and, as of 2025, the Gonzalez settlement. Knowing those rules, and having someone in your corner who knows them, is the difference between feeling powerless and having a real plan.

If your loved one has been detained, or if you want to protect yourself and your family before anything happens, speak with an immigration attorney early. The earlier you understand the paperwork and the options, the more choices you have.