ISLAMABAD, Nov. 26 (Xinhua) -- Pakistani Prime Minister Yusuf Raza Gilani has strongly condemned the NATO/ISAF attack on the Pakistani post, which has reportedly killed 28 Pakistani security personnel, said the Foreign Ministry on Saturday.
"On Prime Minister's direction, the matter is being taken up by the Foreign Ministry, in the strongest terms, with the NATO and the US," said a brief Foreign Ministry statement.
The statement did not give any details about the casualty figures in the overnight NATO strikes in the country's northwest Mohmand tribal region which borders Afghanistan.
Earlier the Foreign Ministry also condemned the NATO air strikes on three Pakistani border posts. Pakistani media said that 28 soldiers were killed and 15 others were injured in one of the deadly NATO strikes in Pakistani border regions.
Foreign Office Spokesperson Tehmina Janjua said that Pakistan is considering blockade of supplies to NATO forces in neighbouring Afghanistan after the incident. Local media has reported that the Pakistani authorities have already suspended supplies.
The spokesperson was quoted by local TV channels as describing the NATO strikes as "attack on Pakistan's sovereignty".
She confirmed that Pakistan has formally lodged protest with the U.S. State Department in Washington. Local TV channels reported that Pakistani diplomats in Washington conveyed a formal protest to the U.S. officials and demanded immediate inquiry.
The spokesperson said Pakistan has also started its own investigation and is collecting details of the incident, which has sparked widespread condemnation in the country.
"We will review several options after investigations are completed," she said. "Suspension of NATO supplies could be one of the options," she added.
Barrister Masood Kausar, Governor of north-western Khyber Pakhtoonkhwa Province, who is also in-charge of tribal affairs, condemned the NATO strike and said Pakistan will raise the issue in different forms.
In a statement he warned that Pakistan could take counter action if the NATO carries out attacks on Pakistani posts.
Sources said that NATO helicopters entered Pakistani airspace in Mohmmand tribal region from Afghanistan and fired at least three border posts, killing 28 soldiers and injuring 15 others. All posts were also destroyed.