U.S. warns of retaliation after American cleric killed in Yemen

The Obama administration says the killing of at U.S.-born cleric in Yemen has raised the risk of anti-American violence worldwide.

The U.S. State Department says the death of Anwar Al-Awlaki, one of the world’s most wanted terrorists, could cause certain groups to retaliate against U.S. citizens or American interests.

Al-Awlaki was killed Friday by an American drone during an attack on his convoy. A similar alert was issued after Osama Bin Laden was killed in Pakistan.