The shooter who killed at least two detainees at an Immigration and Customs Enforcement facility in Dallas on Wednesday left shell casings at the scene that read “ANTI ICE,” according to a photo FBI Director Kash Patel posted on X.

While an investigation into the attack is “ongoing, an initial review of the evidence shows an ideological motive behind this attack,” Patel wrote.

“These despicable, politically motivated attacks against law enforcement are not a one-off. We are only miles from Prairieland, Texas where just two months ago an individual ambushed a separate ICE facility targeting their officers,” Patel wrote.

“It has to end and the FBI and our partners will lead these investigative efforts to see to it that those who target our law enforcement are pursued and brought to the fullest extent of justice,” he added.

The shooter, who took his own life, has yet to be publicly identified. He opened fire from a nearby government building, the Dallas Police Department said on X.

All of the victims of Wednesday’s shooting were ICE detainees, according to NBC News.

This morning just before 7am local time, an individual fired multiple rounds at a Dallas, Texas ICE facility, killing one, wounding several others, before taking his own life. FBI, DHS, ATF are on the ground with Dallas PD and state authorities.

While the investigation is… pic.twitter.com/SMOyxiKLqA

— FBI Director Kash Patel (@FBIDirectorKash) September 24, 2025

Wednesday’s attack is just the latest in an ongoing pattern of incidents against ICE personnel in Texas and across the country.

A group of leftist anarchists clad in military-style gear threw fireworks at an ICE facility in Alvarado, Texas, located just outside of Dallas, to lure officers outside before they opened fire on July 4, shooting a local police officer in the neck.

The group allegedly possessed fliers reading “FIGHT ICE TERROR WITH CLASS WAR!” and “FREE ALL POLITICAL PRISONERS,” and a flag stating, “RESIST FASCISM – FIGHT OLIGARCHY.”

In a separate incident, Bratton Dean Wilkinson, a 36-year-old American citizen, showed up at the ICE facility in Dallas last month and announced that he was carrying a bomb in his backpack and flashed a “detonator” on his wrist, the agency said.