Pakistani Prime Minister Yousuf Raza Gilani on Wednesday appealed to the nation to show unity as the country has been under tremendous pressure from the Western countries after last week's killing of Osama bin Laden in U.S. forces operation.

The al-Qaida chief was killed at a compound in the northwestern city of Abbottabad on May 2, sparking a debate across the world as to how the most wanted man was hiding in a Pakistani garrison town.

"We are at the crossroads today and the situation demands resolve and commitment of the nation to stand-by the state institutions and defend our geographical and ideological frontiers, " Gilani told the Senate, upper house of the parliament.

The U.S. is asking Pakistan to carry out investigation about the network, which was supporting Osama bin Laden.

Opposition parties are also demanding judicial inquiry as to why Pakistani radar system failed to detect the intrusion of the U. S. military helicopters, which carried out nearly 40 minutes operation on Pakistani soil.

"Osama was not a Pakistani citizen rather he was involved in heinous crimes while leading al-Qaida which is responsible for killing thousands of innocent Pakistanis during the last few years, " Gilani said.

He said as Pakistan is facing serious threats and the situation demands more coordination between the political forces and all state institutions.

The prime minister said it is not time for point scoring but putting heads together to devise a comprehensive and workable strategy to safeguard the country.

"Anybody might have wrong perception of the situation but all are patriots and want to overcome these challenges. We can only save our country with unity and determination," he said.

Gilani said the government has decided to convene in-camera session of the parliament on Friday in which the parliamentarians will be briefed about the situation arising of the Osama's killing.

"We should not provide opportunity to others to case an evil on our country," said the prime minister.