DALLAS (AP) - A gunman fired upon a Dallas immigration field office from a nearby roof Wednesday morning, killing two detainees and critically wounding another, before killing himself in what authorities called an indiscriminate attack on U.S. Immigration and Customs Enforcement.

All three victims were inside a van outside the facility at the time the gunman opened fire, the Department of Homeland Security said in a statement. Authorities say they found ammunition with anti-ICE messaging at the scene.

The attack is the latest public, targeted killing in the U.S. and comes two weeks after conservative leader Charlie Kirk was slain by a rifle-wielding shooter on a roof.

Here are some of the things to know about the shooting at the ICE field office.

Who are the victims?

All three vic

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