Islamabad, December 22 (RHC)-- At least three people have been killed and several others wounded, including a senior army officer, after two separate bomb explosions hit a volatile tribal region in Pakistan.

Pakistani officials said the attacks took place in the Mohmand tribal area near the border with Afghanistan on Tuesday. The bomb planted along the roadside in Baizai area went off as a vehicle passed by, killing a tribal policeman, a foreman and a tribesman, local officials said.

A similar attack also hit a military vehicle in the same area, leaving an unnamed army official and a soldier injured. Police are currently investigating the two incidents. 

Although no group or individual has claimed responsibility for the bombings so far, such attacks are usually carried out by pro-Taliban militants operating in the country.