A suspect in the Dallas shooting that killed five police officers has died after a tense standoff with police in a downtown garage, US media reported, citing law enforcement sources.
CNN cited a police source as saying that the suspect was killed, though some local media outlets said the suspect had shot himself.
Dallas Police Major Max Geron said officers were conducting "extensive" sweeps across the downtown area of the usually bustling Texas city. The area was on lockdown, with no bus or rail service and flight restrictions.