Anti-ICE gunman Joshua Jahn carefully plotted his assault on immigration officers before taking up a sniper position on a Dallas rooftop, and expressed a desire to instill “terror” in

Newly released surveillance footage shows Immigration and Customs Enforcement (ICE) agents ushering detainees to safety during the fatal shooting at a Dallas, Texas, ICE facility Wednesday. The video,

Joshua Jahn, 29, identified as the shooter at the Dallas ICE detention center, killed at least two inmates and wounded one before turning the gun on himself.

Dallas shooter Joshua Jahn’s gamer pals made ghoulish jokes about his attack on an ICE facility where he killed one person and critically wounded two others — including suggesting he

That amounts to nearly 15% of his entire life — including sleeping hours — on the video game platform Steam over the course of a decade and a half.

Joshua Jahn acted alone and planned the ICE facility shooting in Dallas with significant detail. He left handwritten notes expressing hatred for the federal government and a desire to terrorize ICE employees,

Immigrants checking in at a Dallas ICE facility describe the chaos when a gunman opened fire, but say they must return, fearing deportation as well as retaliation. CNN’s Gustavo Valdes reports from Texas.