Pakistani Shiite Muslims sit in protest in Quetta, Pakistan, on Monday, Feb. 18, 2013, following a bombing that killed scores of people on Saturday. The protesters have refused to bury victims of the attack until authorities take action against the militants who were responsible. (AP Photo/Arshad Butt)

Photo by: Arshad Butt

Pakistani Shiite Muslims sit in protest in Quetta, Pakistan, on Monday, Feb. 18, 2013, following a bombing that killed scores of people on Saturday. The protesters have refused to bury victims of the attack until authorities take action against the militants who were responsible. (AP Photo/Arshad Butt)