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 authorities say they have negotiated a seven-day ceasefire after more than 80 people were killed in renewed sectarian violence in the north-west of the country. Another 156 are said to have been wounded in three days of fighting in the tribal district of Kurram, near the Afghan border.