Witnesses began tweeting and posting videos of the aftermath.
According to Dallas Police Chief David Brown, at least 10 officers were shot by snipers. The 11th officer was shot while exchanging gunfire with a suspect. Authorities say three people are in custody, none of their names have been released. A fourth suspect died in a standoff with police, after making threats about explosives. "The suspect told our negotiators that the end is coming," Brown said.— Chelsie Hadden (@ChelsieHadden) July 8, 2016
The mayor said officers used explosives to 'blast him out.'
BREAKING: Dallas Mayor Mike Rawlings says the suspect in a standoff with police has died.— The Associated Press (@AP) July 8, 2016
After conducting a sweep of the area, no explosives were found.
Primary and secondary sweeps for explosives are complete and no explosives found. #dallasshooting— Maj. Max Geron (@MaxDPD) July 8, 2016
The police department's Twitter account sent out updates throughout the night and into early Friday.
It has been a devastating night. We are sad to report a fifth officer has died.— Dallas Police Depart (@DallasPD) July 8, 2016
Update: pic.twitter.com/ukWSZJeZo3— Dallas Police Depart (@DallasPD) July 8, 2016
Update: pic.twitter.com/qBJe3q0EtN— Dallas Police Depart (@DallasPD) July 8, 2016
With heavy hearts, we are devastated to report a fourth officer has been killed.— Dallas Police Depart (@DallasPD) July 8, 2016