At least 22 militants have been killed and dozens injured in deadly clashes between rival militant groups in north-west Pakistan, officials say.
Army helicopter gunships were deployed after the clashes in the tribal region of South Waziristan.
The area is a stronghold of Pakistani Taliban commander Baitullah Mehsud, who the US and Pakistan believe was killed in a US air strike last week.
Senior commanders from his group have denied that he was killed.
The clashes erupted in the town of Tank when Baitullah Mehsud loyalists are reported to have attacked the homes and offices of supporters of a rival militant group, headed by Haji Turkistan Bhittani.