Ryan Louis Mosqueda, 27, began shooting in the parking lot, aiming toward the building and law enforcement officials, just before 6 a.m., said John Saenz, a spokesman for the McAllen Police Department. One responding police officer, Ismael Garcia, a 10-year veteran of the force, was wounded in the knee and is being treated at a local hospital, Saenz said. He is in stable condition.
...
Authorities have not determined a motive. Mosqueda was a Michigan resident, according to his forms of identification and his vehicle tags and registration, Saenz said. He was reported missing on Sunday from another address associated with him in Weslaco, Texas, a city near McAllen, the police spokesman added.

Mosqueda arrived at the Border Patrol facility in a small white passenger car, parked in the facility’s parking lot, exited his vehicle with an assault rifle and opened fire, Saenz said. He was wearing a tactical vest and moved through the parking lot, continuing to fire at federal and local officers.

After Mosqueda was killed, officers found additional weapons in his vehicle, including another rifle and ammunition, Saenz said.

https://www.washingtonpost.com/immigration/2025/07/07/texas-border-patrol-shooting-mcallen/