The explosion almost destroyed the building and clouds of smoke emitted out of the building hours after the blast.
Gunshots were reported before the explosion took place. The groups behind the blasts is yet to be detemined.
The blast figures among the series of bomblasts that have rocked Pakistan after the launch of offensive against Afghanistan.
Peshawar has been the worst hit among all the cities where blasts has been carried out. In Oct,2009 the city has faced five terror attacks which had claimed around 190 lives.