Authorities have not provided details about the motive of the shooter who opened fire on Border Patrol agents at an annex site in Texas Monday.

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Border Patrol union chief Paul Perez denounces a Democratic-led bill to unmask immigration agents, calling it dangerous and politically motivated.

Two officers and one Border Patrol employee were injured, including one shot in the knee, a federal spokesperson told USA TODAY. The gunman died.

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.

Authorities say a 27-year-old man was killed after opening fire at a U.S. Border Patrol facility in McAllen, Texas.

Weslaco, Texas police have released an incident report that details a missing persons report filed by the father of Ryan Mosqueda, who later shot at Texas border patrol agents.

Gregory Bovino, U.S. Border Patrol Chief for the El Centro Sector, discusses several immigration topics on ‘The Ingraham Angle.’