Pakistani security officials check the site of a bomb blast as the minority Muslim Shiite sect observed the annual Ashoura holiday in Dera Ismail Khan, Pakistan, on Sunday, Nov. 25, 2012. (AP Photo/Kashif Naveed)

Photo by: Kashif Naveed

Pakistani security officials check the site of a bomb blast as the minority Muslim Shiite sect observed the annual Ashoura holiday in Dera Ismail Khan, Pakistan, on Sunday, Nov. 25, 2012. (AP Photo/Kashif Naveed)