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.

Two officers and a Border Patrol employee were injured, according to the Department of Homeland Security. A motive is not clear at this time.

McALLEN, Texas (AP) — A man with an assault rifle fired dozens of rounds at federal agents and a U.S. Border Patrol facility in Texas on Monday, injuring a police officer, before authorities shot and killed him.