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.

The man opened fire on the building in McAllen, Texas, on Monday. A border patrol employee and two officers were injured, federal officials said.

A Michigan man, Ryan Louis Mosqueda, fired on a U.S. Border Patrol station in Texas, injuring three and dying in the return fire. His motive is unclear, but his family cited past mental health issues.