A damaged vehicle is seen at the blast site in southwest Pakistan's Quetta on May 14, 2012. At least three people including one paramilitary soldier were killed and 28 others were injured when a bomb hit a paramilitary convoy in Pakistan's southwest city of Quetta on Monday afternoon, said by police. [Xinhua]

Pakistani security officials carry an injured soldier from the blast site in southwest Pakistan's Quetta on May 14, 2012. At least three people including one paramilitary soldier were killed and 28 others were injured when a bomb hit a paramilitary convoy in Pakistan's southwest city of Quetta on Monday afternoon, said by police. [Xinhua]

A damaged vehicle is seen at the blast site in southwest Pakistan's Quetta on May 14, 2012. At least three people including one paramilitary soldier were killed and 28 others were injured when a bomb hit a paramilitary convoy in Pakistan's southwest city of Quetta on Monday afternoon, said by police. [Xinhua]

People gathered at the blast site in southwest Pakistan's Quetta on May 14, 2012. At least three people including one paramilitary soldier were killed and 28 others were injured when a bomb hit a paramilitary convoy in Pakistan's southwest city of Quetta on Monday afternoon, said by police. [Xinhua]

 People transfer an injured man to a hospital in southwest Pakistan's Quetta on May 14, 2012. At least three people including one paramilitary soldier were killed and 28 others were injured when a bomb hit a paramilitary convoy in Pakistan's southwest city of Quetta on Monday afternoon, said by police. [Xinhua]