A Taliban suicide bomber has killed at least 20 members of a rival group in north-west Pakistan.
The Taliban said the bombing was in revenge for the killing of some of its fighters two months ago.
However, Lashkar-e-Islam claimed that only six were killed in the incident, which happened in the Nahaqai area of Tirah valley in Khyber.
The BBC reports there have been sporadic clashes between the Taliban and Lashkar-e-Islam, but none of the reports can be independently confirmed.
