More than 13,000 immigrants convicted of homicide — either in the United States or abroad — are living outside of Immigration and Customs Enforcement detention, according to data ICE provided to Congress earlier this week.

The immigrants are part of ICE’s “non-detained” docket, meaning the agency has some information on the immigrants and they have pending immigration cases in the U.S., but they are not currently in detention either because they are not prioritized for detention, they are serving time in a jail or prison for their crimes, or because ICE cannot find them, three law enforcement officials said.