Islamabad, Jan 22: At least five security personnel were killed and seven other were injured when militants have attacked a Pakistani security force fort in the troubled South Waziristan region on the Afghan border.

Pakistan military spokesman Major General Athar Abbas said that militants have attacked the Ladha fort and an observation post, adding that at least seven soldiers were wounded.

“Security forces retaliated with fire causing heavy casualties ... the attack was beaten back,” the BBC quoted Major General Abbas, as saying.

He went on to say that he did not have the exact number of militants killed in the clash.

South Waziristan is a known stronghold of pro-Taleban and al-Qaeda militants. (ANI)