Members of a law enforcement group chat including Immigration and Customs Enforcement (ICE) and other agencies inadvertently added a random person to the group called Mass Text where they exposed highly sensitive information about an active search for a convicted attempted murderer seemingly marked for deportation, 404 Media has learned.The texts included an unredacted ICE Field Operations Worksheet that includes detailed information about the target they were looking for, and the texts showed ICE pulling data from a DMV and license plate readers (LPRs), according to screenshots of the chat obtained and verified by 404 Media. The person accidentally added to the group chat is not a law enforcement official or associated with the investigation in any way, and said they were added to it weeks ago and initially thought it was a series of spam messages.The incident is a significant data breach and operational security failure for ICE, which has ramped up arrest efforts across the U.S. as part of the Trump administrations mass deportation efforts. The breach also has startling similarities to so-called Signal Gate, in which a senior administration official added the editor-in-chief of The Atlantic to a group chat that contained likely classified information. These new ICE messages were MMS, or Multimedia Messaging Service messages, meaning they werent end-to-end encrypted, like texts sent over Signal or WhatsApp are.