Deputy Inspector General of Police Wazir Khan said powerful explosives were fitted in the hidden cavities of a tanker that was driven to the busy market in the evening when people were busy in routine shopping.
The suicide bomber exploded the tanker-bomb that killed at least 63 people on the spot and injured around 200 others besides causing a heavy loss of property in the market.
Police said around 1,000 kg of explosives was used in the explosion. It was the biggest bomb ever exploded in the history of Pakistan, and it left 12 feet deep and six feet wide crater at the ground.
