At least eight security personnel and nine civilians were injured in an attack at a military cantonment in northwestern Pakistan's Khyber Pakhtunkhwa province early Monday morning, official sources report.

Sources told Xinhua on condition of anonymity that the incident happened at about 4:45 a.m. local time (2345 GMT) in Bannu district of the province where a suicide bomber crashed into a vehicle of the military's oil terminal at one of the cantonments' gates while his three to four accomplices managed to enter the area by hurling hand grenades.

One of the attackers has been killed by security officials, and a search and clearance operation is underway in the area, the sources added.

  

The civilians including a police official were injured by shattered glass from nearby houses and have been taken to a nearby hospital.

"The exact number of injured troops have yet to be ascertained, but eight of them including an officer have been shifted to a military hospital in the district," the sources added.

No group has claimed responsibility for the attack yet.