U.S Immigration and Customs Enforcement (ICE), Homeland Security Investigations (HSI), administers a Victim Notification Program. This program allows eligible victims and witnesses to obtain reliable and timely information regarding a criminal alien's release from custody.  Victims and witnesses are required to register with HSI in order to receive notification of a criminal alien's release.

Listed below is a universal resource locator for the HSI Victim Notification Program. A victim or witness can simply click on the hyperlink and be transferred to a number of valuable victim services programs provided by ICE. 

https://www.ice.gov/victim-notification