At least nine people were killed and 16 others wounded when a suicide bomber blew up his explosive-laden car in Kurram Agency on Saturday, officials said.
The bomber detonated the vehicle just outside the compound of anti-Taliban militant commander Maulana Nabi, in the town of Spin Tal near the Afghan border, senior administration official Zakir Hussain said.
"It was a suicide attack, the target was militant commander Nabi's centre," Hussain told AFP.
Nabi's guards stopped the vehicle and the attacker blew his car up after he failed to enter the compound, he said. Residents said he survived the attack.
An intelligence official placed the death toll at 10. They included a guard and four children who had been playing near the compound.
Officials said Nabi had developed differences with the leadership of the Pakistani Taliban.
In the past, clashes have erupted between the supporters of Mullah Nabi and the TTP’s Mullah Toofan leading to casualties on both sides.
No one has claimed responsibility for the blast. However, it is suspected that members of the TTP were behind Saturday’s attack.