Syrian civil defense volunteers dig through the rubble of a mosque following a reported airstrike late Thursday. The U.S. military conducted an airstrike on a building in northern Syria targeting Al Qaeda militants and is investigating reports that civilians were killed or injured in a nearby mosque.U.S. Central Command, which oversees military operations in the Middle East, said in a statement late Thursday that the bombing raid hit a &ldquo;meeting location&rdquo; in Syria&rsquo;s Idlib province and left &ldquo;several terrorists&rdquo; dead.Col. John Thomas, spokesman for the command, said the airstrike destroyed a building about 50 feet from the mosque while aerial photos showed the mosque was still standing.The military is investigating whether civilians were killed or injured as a result of the strike.The Syrian Observatory for Human Rights, a British-based monitoring group with a network of activists in Syria,&nbsp;reported earlier&nbsp;that an airstrike hit the mosque in Al Jinah village and at least 42 people were killed. The group did not specify who launched the air attack.