PESHAWAR: As Operation Zarb-i-Azb continues in the restive North Waziristan Agency, at least three security personnel were killed and two others injured on Sunday as Spinwam Security Fort came under militant attack.

Official sources say that scores of rockets were fired on the fort which caused both human and material loss.

Military authorities confirmed that one of the rockets fell into the fort, resulting in the death of three security personnel while two others were injured. Inter Services Public Relations (ISPR) is yet to issue an official statement on the attack.

Prime Minister Nawaz Sharif expressed deep grief and sorrow on the death of three security personnel .In a statement issued from the Prime Minister House, the premier said the sacrifices of the armed forces for security of the country would not go in vain. He also extended condolences to the families of the slain soldiers.

Know more: Army says 910 'terrorists', 82 soldiers killed in North Waziristan

Military operation Zarb-i-Azb was launched by the Pakistan Army on June 15 following a brazen militant attack on Karachi's international airport and failure of peace talks between the government and Tehreek-i-Taliban Pakistan (TTP) negotiators.

Earlier on September 3, a statement issued by the military put the official number of terrorists killed in operation at 910 and that 82 Pakistani soldiers had also lost their lives during the offensive.

The death tolls and their breakdowns could not be independently verified as journalists have limited access to the restive tribal region.