A fifth police officer is dead after gunmen targeted officers during a public demonstration in Dallas, Texas, the city's police force says on its Twitter feed early Friday.
"It has been a devastating night. We are sad to report a fifth officer has died," the tweet read.
The city remains in a state of chaos after one or more snipers began shooting at officers during a Thursday night demonstration protesting police violence against the US black community. Eleven officers were reported wounded.
There have been three arrests amid reports of an ongoing armed stand-off between officers and another suspect.
The Dallas protest was held in the wake of the deaths of Alton Sterling on Tuesday and Philando Castile late Wednesday, which sparked outrage on social media and calls by civil rights leaders and politicians to address the issue of police brutality against the black community.