Pakistani police commandos stand alert during a mourning congregation of Shiite Muslims during the holy month of Muharram in Quetta, Pakistan on Thursday, Nov. 22, 2012. (AP Photo/Arshad Butt)

Associated Press
Pakistani police commandos stand alert during a mourning congregation of Shiite Muslims during the holy month of Muharram in Quetta, Pakistan on Thursday, Nov. 22, 2012. (AP Photo/Arshad Butt)
Pakistani police commandos stand alert during a mourning congregation of Shiite Muslims during the holy month of Muharram in Quetta, Pakistan on Thursday, Nov. 22, 2012. (AP Photo/Arshad Butt)
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