A police officer has been shot and killed, and another wounded, after being shot during a traffic stop, in San Diego, in the US state of California.
Three police officers have reportedly been shot, and are feared dead, in Baton Rouge, in the US state of Louisiana.
A policeman has been shot dead, and three women stabbed, by an attacker, in the state of Louisiana, United States.
A Louisiana trooper has died, after being shot in the head by a man, with a sawed-off shotgun, during a traffic stop.
At least two people have been killed, and a further seven wounded, after a lone gunman opened fire inside a crowded movie theatre in Lafayette, Louisiana.