ACHILLE, Okla. (AP) — Police are investigating after the mayor of a small Oklahoma town says an attacker knocked him unconscious.

Achille (A'-chil-ee) Mayor David Northcutt told police he was in an Achille convenience store Saturday when a man hit him on the back of the head. Northcutt says the blow knocked him out and he woke up with a badly bruised face and eyes nearly swollen shut.

Police Chief Christopher Watson didn't return telephone messages left for him Monday with a town clerk. A voice message left at a number listed for Northcutt wasn't immediately returned.

No arrest has been made....