Detainees were being loaded out of a van when the gunfire erupted, according to a senior ICE official. Some detainees were still in the van when the shots rang out, and ICE agents ran back into the gunfire to bring the rest of them to safety in a move that "likely saved more lives," the official said.

What exactly motivated a shooter who authorities say opened fire on a U.S. Immigration and Customs Enforcement facility in Dallas, killing one detainee and wounding two others before taking his own l...

The shooter was found dead on the roof of a nearby building, local ABC affiliate WFAA reported, citing sources.