The incident took place at the entrance of the U.S. Border Patrol sector annex in McAllen, a city in southern Texas that borders Mexico, according to the DHS spokesperson. Mosqueda fired dozens of rounds toward the building and agents inside, Rodriguez said.

A 27-year-old man with a rifle and tactical gear was killed Monday morning after exchanging fire with law enforcement officers at a Border Patrol facility in McAllen, Texas, injuring several.