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 man was killed in an exchange of gunfire outside a U.S. Border Patrol facility in McAllen, Texas, on Monday after he opened fire near the building and law enforcement personnel confronted him, according to federal officials who are investigating the incident.