The FBI and Texas DPS are asking for the public's help in the search for Benjamin Song, accused of shooting an officer in the Alvarado ICE attack.

The suspect wanted in a recent ambush on an ICE facility is a long-time Antifa member, connected to several left-wing militant groups.

The July 4 attack is just one in a series of recent attacks against federal immigration officers. On Monday, July 7, U.S. Border Patrol agents in the Rio Grande Valley fatally shot a Michigan man who launched an attack at their McAllen facility before dawn.