Peshawar: A bomb strapped to a donkey killed at least four people and wounded more than 10 others in Pakistan's tribal belt on the Afghan border Thursday, officials said.

The attack took place in Mishti Mela village in Orakzai, one of the seven districts in the semi-autonomous tribal belt, branded by Washington as the most dangerous place on Earth and the global headquarters of Al Qaida.

"A remote-controlled bomb strapped to a donkey blew up as the animal entered a small bazaar of the village, killing at least four people and injuring more than 10 others," senior local administration official Fazal Qadir said.

Another local official, Nauman Khan, confirmed the incident and casualties.

The Pakistani military has carried out a series of offensives in Orakzai, where Taliban and Al Qaida-linked militants have carved out strongholds to plot attacks on Pakistani, Afghan and Western targets.