The latest violence took place on Tuesday in Kurram district, bordering Afghanistan, in Khyber Pakhtunkhwa province. At least 10 people died and 21 others injured in the sporadic tribal sectarian violence, police said.

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.

More than 80 people have been killed in renewed sectarian violence in north-west Pakistan, officials say. Another156 are said to have been wounded in three days of fighting in the tribal district of Kurram,