Washington:US President Barack Obama on Sunday strongly condemned the attack on police in Baton Rouge that killed three police officers and wounded three others. "I condemn, in the strongest sense of the word, the attack on law enforcement in Baton Rouge. 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 civilised society, and they have to stop," Obama said in a statement. "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," said Obama. Obama added that he has offered the "full support of the federal government" to Louisiana's Governor, Baton Rouge's Mayor and local law enforcement. Three police officers were killed and several others were injured on Sunday in a shooting incident in Baton Rouge, the capital city of the US state of Louisiana. This is the second fatal shooting incident that killed police officers in the country in less than two weeks after a gunman killed five police officers and hurt seven others in Dallas, a city in the US state of Texas.