At least 50 people have been killed and over 100 others injured in a bomb attack in a crowded market selling hashish in north-western Pakistan. The blast occurred in the Khyber tribal region, close to the Afghan border, in an area where the Taliban is known to have a strong presence. Witnesses said the bomb had exploded in a weekly hashish market set up in the grounds of a compound used by the pro-Taliban Lashkar-e-Islam group for recruiting militants, and near a mosque. Initial reports suggested it had been a cattle market. Reports from the area say a senior member of Lashkar-e-Islam, one of the biggest militant organisations in the Khyber, was killed in the blast. President Asif Ali Zardari and Prime Minister Syed Yousuf Raza Gilani have strongly condemned the bomb blast. They also ordered an enquiry into the incident.