Pakistani family members of victims visit a police training center in Quetta, Pakistan, on Tuesday after gunmen opened fire and detonated explosive vests in an hourslong siege of the academy. Scores of people were killed, mostly young police cadets. Arshad Butt/AP hide caption

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Arshad Butt/AP

Pakistani journalists grieve over the body of a news cameraman after an explosion at a government hospital in Quetta on Monday. Banaras Khan/AFP/Getty Images hide caption

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Banaras Khan/AFP/Getty Images

Pakistani police officers and residents gather at the site of a bomb blast that targeted paramilitary soldiers in a commercial area in the city of Quetta, killing 11 people. Later in the day, twin blasts at a snooker club in the city killed at least 80 people. Arshad Butt/AP hide caption

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Arshad Butt/AP