Authorities are searching for Song in connection with an attack outside a U.S. Immigrations and Customs Enforcement detention facility in Texas on July 4.

Benjamin Hanil Song, a former U.S. Marine Corps reservist, is wanted in connection with a July 4 ambush that left a police officer wounded outside an ICE detention facility.

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.