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Blast at Pakistan Shiite Mosque Kills 14 ISLAMABAD, Pakistan - An explosion ripped through a Shiite Muslim mosque in the eastern Pakistani city of Sialkot during Friday prayers, killing at least 14 people and wounding dozens, police said.    Witnesses reported that a man with a briefcase entered the mosque shortly before the blast and the briefcase had exploded, Sialkot police chief Nisar Ahmed said... 