Three police officers killed in Baton Rouge

Washington : A black veteran shot three police officers dead Sunday in the Louisiana capital of Baton Rouge, in a bloody act reminiscent of recent slayings in Dallas to avenge African Americans killed by law enforcement.

The shooting, which also wounded three other officers, took place in a city scarred by racial tensions and protests against police brutality since the July 5 death of Alton Sterling, a black man shot at point-blank range by white police.

Louisiana State Police Superintendent Colonel Mike Edmonson told reporters the gunman behind the shooting -- widely identified by US media as Gavin Long, 29 -- was killed and there are no suspects at large. The motive was not immediately clear.

A troubling picture emerged of the shooter, a former Marine whose Iraq tour lasted from June 2008 to January 2009.

Long legally changed his name last year to Cosmo Ausar Setepenra, claiming to be a member of the Washitaw Nation, a group of African Americans claiming to be a Native American nation in the United States.

Setepenra's Twitter feed, which was filled with posts targeting white people, said he had traveled to Dallas, and he posted videos of himself traveling there.

"Violence is not THE answer (its a answer), but at what point do you stand up so that your people dont become the Native Americans...EXTINCT?" he wrote in a July 13 post.

But one of the officers killed by Long -- Montrell Jackson -- was black. The other two were identified by US media as Matthew Gerald and Brad Garafola.