Update: Dallas sniper told police he wanted to kill white cops and he was angry about Alton/ Castile shootings

Dallas police chief, David Brown has revealed that the Sniper who killed 5 police officers and injured several others in Downtown Dallas on Thursday night during a 'Black lives matter' rally during negotiations with police said he wasn't affiliated to any terrorist organizations and his aim was to kill white policemen because he was angry at the recent police killings of Alton Sterling and Philando Castile.

Police confirmed the unnamed man died when a robot detonated an explosive while he was holed up in a local college.

Dallas police chief David Brown revealed “We had an exchange of gunfire with the suspect. We saw no other option but to use our bomb robot.”

Chief David Brown has appealed for unity in the wake of the attacks, which left five police dead and nine wounded - seven of them cops - saying, "This must stop - this divisiveness between our police and our citizens."

Three suspects are in custody but police say the shooter is dead.