In December it targeted a police station - like Peshawar, in the north-west of the country - leading to the deaths of 33 militants.Monday's blast took place around 13:30 (08:30 GMT) during afternoon prayers in the north-western city, which is near the country's border with Afghanistan.A video circulating on social media and verified by the BBC shows half of a wall caved in. The mosque was covered in bricks and debris as people clambered over the rubble to escape.
