A suicide bomber rammed his explosive-laden vehicle into a building near a security force checkpost here on Friday, killing two security personnel, while 15 others were injured. According to sources, the bombing took place outside the Muslim Public School and College, in the Fizaghat neighbourhood of Mingora district. Security forces personnel were living in the building when the blast took place. The area was cordoned off by security forces after the blast and army gunships were seen hovering over the area.