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 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.

Authorities have issued a Blue Alert for Benjamin Hanil Song, wanted in a North Texas ICE facility ambush on July 4 that wounded an officer.