The sniper shot the man following a standoff of several hours in a restaurant parking lot in the suburb of Hutchins, where he had fled in a van after the early-morning shootout outside of police headquarters near downtown Dallas, Dallas police Chief David Brown said at a news conference.

Investigators found a package containing pipe bombs near the headquarters building and the suspect told police negotiators that he had "C4" explosives in the van, Brown said. The chief said police were using a camera-equipped robot to inspect the van and to try to determine if the suspect was alive or dead.