People gathered at a blast site in southwest Pakistan's Quetta on Aug. 15, 2012. At least one man was killed and seven others were injured in the blast at a hotel in Quetta late Wednesday night. (Xinhua/Mohammad)

People examines a blast site in southwest Pakistan's Quetta on Aug. 15, 2012. At least one man was killed and seven others were injured in the blast at a hotel in Quetta late Wednesday night. (Xinhua/Mohammad)

People gathered at a blast site in southwest Pakistan's Quetta on Aug. 15, 2012. At least one man was killed and seven others were injured in the blast at a hotel in Quetta late Wednesday night. (Xinhua/Mohammad)

A man examines a blast site in southwest Pakistan's Quetta on Aug. 15, 2012. At least one man was killed and seven others were injured in the blast at a hotel in Quetta late Wednesday night. (Xinhua/Mohammad)