A federal law enforcement source told CBS News that local police arrested eight people. The official said some of those apprehended were wearing body armor.

He is wanted in connection with a July 4 attack on the U.S. Immigration and Customs Enforcement (ICE) Detention Facility in Alvarado, Texas, where an Alvarado police officer was shot.

The suspect is believed to have fired two AR-15-style rifles at three officers, and his criminal complaint document says he was in the U.S. Marine Corps Reserves for five years.