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.

Ten people have been charged with attempted murder of federal agents over the shooting outside the Prairieland Detention Centre in Alvarado, Texas, on Friday

Attorneys with the Department of Justice’s North Texas division unsealed charges against 10 North Texas residents connected to a July 4 shooting at Immigration and Customs Enforcement detention facility in Johnson County.