Ryan Louis Mosqueda, 27, was killed after opening fire on federal and local law enforcement, officials said. Investigators have not determined a motive.

A shooter opened fired at a Border Patrol facility in McAllen, Texas, on Monday morning, a Department of Homeland Security spokesperson said.

McAllen, Texas, Police Chief Victor Rodriguez said Mosqueda was armed with an assault rifle and was carrying a utility vest as he fired dozens of rounds at agents when they arrived at a Border