Three police officers shot dead at Baton Rouge, Louisiana

Three officers are dead and three others seriously wounded after another attack on police in the United States.

The shooting happened at Baton Rouge in Louisiana.

One of the suspects is dead, with two others believed to be on the run.

Barack Obama has described the shooting as the ‘work of cowards’.

The attack happened not far from the scene of a protest following the recent shooting of Alton Sterling by a police officer.