<p>ERIE, Pa. — A pizza deliveryman told police he had been forced to rob a bank and asked authorities to help him minutes before a bomb strapped to his chest exploded and killed him.</p>
<p>On Saturday, federal agents and police in northwestern Pennsylvania were trying to solve the bizarre case of 46-year-old Brian Douglas Wells, who left to deliver a pizza to a mysterious address in a remote area about an hour before he turned up at the bank with a bomb strapped to his body.</p>