The U.S. Justice Department said on Wednesday it would investigate the killing of a black man pinned to the ground and shot in the chest by two white police officers outside a convenience store in Baton Rouge, Louisiana.

US police shooting of black man Alton Sterling in Louisiana

The U.S. Justice Department said on Wednesday it would investigate the killing of a black man pinned to the ground and shot in the chest by two white police officers outside a convenience store in Baton Rouge, Louisiana.