An active shooter with a rifle and tactical gear reportedly shot at Border Patrol agents arriving at an annex facility in Texas on Monday, injuring one local police officer, according to multiple reports.

Police and border agents shot and killed the gunman, who has not been identified, at a McAllen Texas Border Patrol building, Fox News and CNN reported, citing law enforcement sources. Authorities believe the shooting was an intentional attack on border officials.

No border agents were harmed in the shooting, but a McAllen police officer was reportedly wounded and is in stable condition.