Fighting between armed Sunni and Shiite groups in northwestern Pakistan killed at least 33 people and injured 25 others, a senior police officer from the region said Saturday. The overnight violence was the latest to rock Kurram,

The clashes overnight between Sunni and Shiite tribes in Khyber Pakhtunkhwa Province came a day after gunmen ambushed a convoy of vehicles in the area.

Pakistani police say gunmen have opened fire on vehicles carrying Shiite Muslims in the country's restive northwest, killing at least 38 people and wounding 20 others.

At least 38 people, most of them Shiite Muslims, were killed in northwestern Pakistan on Thursday as gunmen ambushed convoys of vehicles that had been under the protection of security forces. The attack was one of the deadliest in months of sectarian violence in the Kurram region, a scenic mountainous district bordering Afghanistan.

Around 300 families fled sectarian violence on Saturday in northwest Pakistan as fresh sectarian clashes killed another 32 people.

More than 30 people have died in clashes between militant Sunni and Shiite groups in northwestern Pakistan, police say. Scores have been killed in such sectarian violence in the past few months.

The attack occurred in Khyber Pakhtunkhwa province – an area with a history of sectarian violence between Sunni and Shiite communities. The convoy, travelling from Parachinar to Peshawar, was ambushed despite prior threats to Shiites in the region.