Shots fired from van at Dallas police headquarters, explosive device found

Shots were fired early on Saturday from what appeared to be an armored van outside Dallas Police headquarters that was then chased by police vehicles and an explosive device was found outside the building, police officials said.

Dallas Police Chief David Brown told reporters that witnesses said as many as four suspects were involved in the incident, including one individual who identified himself to police negotiators as James Boulware.

Police said that no officers had been injured, and that they were still negotiating with a suspect inside the van at a fast food parking lot south of Dallas.