2 killed, another critically injured in Dallas ICE facility shooting

U.S. Homeland Security says that two detainees were killed and another was critically injured after a shooting at a Dallas immigration facility.

Authorities say a shooter with a rifle opened fire Wednesday from a nearby roof onto an immigration and customs enforcement location in Dallas, killing at least one person and wounding others before taking his own life.

The exact motivation of the attack was not immediately known.

The FBI said at a morning news conference that ammunition found at the scene contained anti-ice messaging.