US President Barack Obama condemns Sunday's "cowardly" shooting in which three police officers were slain in Baton Rouge, Louisiana, 10 days after five police were killed by a gunman in Dallas.
"I condemn, in the strongest sense of the word, the attack on law enforcement in Baton Rouge," he said in a statement from the White House.
"For the second time in two weeks, police officers who put their lives on the line for ours every day were doing their job when they were killed in a cowardly and reprehensible assault. These are attacks on public servants, on the rule of law, and on civilized society, and they have to stop."
Obama said he had offered full federal support to local authorities in the case. "We may not yet know the motives for this attack, but I want to be clear: There is no justification for violence against law enforcement - none," he said. "These attacks are the work of cowards who speak for no one. They right no wrongs. They advance no causes."