BAGHDAD (Reuters) - The U.S. military said Wednesday a deadly explosion in a mosque that enraged the Iraqi town of Falluja was triggered by a bomb-making class inside the building. "The explosion was apparently related to a bomb manufacturing class that was being taught inside the mosque," the U.S. Central Command said in a statement. Falluja residents had accused U.S. forces of attacking the mosque late Monday. Residents said the blast killed nine people, including the mosque's imam, or prayer leader. They had blamed it on an American air strike -- an accusation U.S. military officials flatly denied. Two rocket-propelled...