EL-ARISH, Egypt (AP) - Militants attacked a crowded mosque during Friday prayers in the Sinai Peninsula, settling off explosives, spraying worshippers with gunfire and killing at least 200 people in the deadliest ever attack on Egyptian civilians by Islamic extremists.The attack targeted a mosque frequented by Sufis, members of Islam's mystical movement, in the north Sinai town of Bir al-Abd.