LANDI KOTAL: The clashes between Tehrik-i-Taliban Pakistan (TTP) and Ansarul Islam (AI) militant groups in Khyber tribal region's Tirah valley area entered their fourth day as the death toll rose to 58 on Monday.

Six militants were killed during the latest clashes. Those killed during the fighting could not be identified until the filing of this report.

Numerous  militants also sustained injuries during the clashes.

Local political sources said both sides resorted to use of heavy and sophisticated weaponry during the fighting.

Fierce clashes had erupted three days ago when members of the Tariq Afridi faction of the banned TTP launched an attack in the Bagh-Maidan area of Tirah valley on Friday, capturing a building belonging to the AI militants.

The Ansaarul Islam militant group had gained some ground against the Pakistani Taliban militants earlier on Sunday.