The officer was shot in the neck on Friday, the night of the Fourth of July , after reporting to the Prairieland Detention Center in Alvarado, about 40 miles (65 kilometers) southwest of Dallas. He was treated at a hospital and released, the Johnson County Sheriff’s office said.

A U.S. attorney called the wounding of a police officer an ‘ambush’ and warned of increasing violence against immigration agents.

One police officer was wounded after at least two people shot at officers outside an immigration detention center in Texas, according to a criminal complaint in federal court.