“Dallas police found bags with explosives after a shootout involving multiple attackers at their headquarters early on Saturday morning. Officials were also locked in a standoff with at least one suspected gunmen who they believed was involved in the earlier attack.
Officials were investigating four suspicious bags that had been ‘spread out all over police headquarters,’ one of which contained a pipe bomb, Police Chief David Brown told reporters. Nearby residents were being evacuated, he said.”
Source: Dallas Standoff: Explosives Found After Police HQ Shootout – NBC News