The group was arrested following the shooting which took place outside the Prairieland Detention Center in Alvarado on Friday

ALVARADO, Texas (AP) — Ten people have been arrested on attempted murder charges in connection with a shooting outside of a Texas immigration detention center that wounded a police officer, where people in black military-style clothing fired at authorities in a “planned ambush,” a U.S. attorney said.

The individuals have been charged with three counts of attempted murder of a federal officer, according to the criminal complaint.