A car bomb has ripped through a crowded market in north-western Pakistan, killing 91 people, just hours after US Secretary of State Hillary Clinton arrived in the country to show US support for its campaign against Islamist militants.
More than 200 people were wounded in the blast in the main north-western city of Peshawar, the latest in a surge of bloody attacks this month by suspected militants apparently aimed at denting public backing for an army offensive against al Qaida and Taliban close to the Afghan border.
The blast set scores of shops on fire and sent a cloud of grey smoke over the city.
TV footage showed wounded people sitting amid the debris as people grabbed at the wreckage, trying to pull out survivors. One two-storey building collapsed as firefighters doused it with water.
Ms Clinton, on her first visit to Pakistan as secretary of state, was three hours' drive away in the capital of Islamabad when the blast took place.
Speaking to reporters on her plane, she praised the army's new anti-Taliban offensive in South Waziristan and promised a new era in relations between Pakistan and the United States.
The explosion was in a neighbourhood home to many Shiite Muslims, who have often been targeted by Taliban and al Qaida allied Sunni extremists.
It hit a market reserved for families. Many of the dead were believed to be women.
No group immediately claimed responsibility, but Peshawar has been the target of three of 10 major bombings or raids blamed on Islamist militants this month. The attacks have killed more than 250 people.
