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 between Alizai and Bagan tribes in Kurram district started on Friday last week following Thursday's attack on a convoy of passenger vans near Parachinar in which 47 people were killed. At least 37 people were killed and several others injured in the tribal sectarian violence over Friday and Saturday, police said.

Nobody has claimed responsibility for Thursday's convoy attack.

A seven-day cease-fire was brokered between the Shia and Sunni communities on Sunday following meetings between a provincial government delegation and elders from both sects.

However, despite the cease-fire, sporadic clashes are continuing, police said.

There was sporadic fighting on Tuesday in Ghozaghari, Matasanagar and Kunj Alizai areas.

Kurram Deputy Commissioner Javedullah Mehsud said that a grand jirga (tribal council) comprising elders from Hangu, Orakzai and Kohat districts will visit Kurram for fresh mediation to end hostilities.

Kohat division Commissioner will lead the peace delegation, he said.

Meanwhile, Dr Mir Hassan Khan, Superintendent of the Kurram district headquarters hospital, said the closure of roads leading to Parachinar following Thursday's attack has resulted in a shortage of medicines.

It is becoming difficult for doctors to treat people due to sa hortage of medicines and “people are losing their lives”, he said.

Shiite Muslims make up about 15 per cent of the 240 million people in Sunni-majority Pakistan. Although the two groups generally live together peacefully, tensions remain, especially in Kurram.

Although the area has a history of sectarian conflict, with militant groups previously targeting the Shiite minority, the current violence is connected to a land dispute.