Islamabad: Deposed Prime Minister Nawaz Sharif's Pakistan Muslim League-Nawaz (PML-N) has claimed that then Army chief and now President Pervez Musharraf had admitted before Sharif that Kargil operation had been a "grave mistake" and had sought his assistance to get US support to ensure safe return of Pakistani troops.

As the Pakistan Prime Minister Shujaat Hussain refuted allegations that Musharraf had kept Sharif in dark about the military operations in Kargil in 1999, PML-N in a statement said Musharraf had accepted that it was a "grave mistake" of sending armed forces on a "suicidal mission" without taking the democratically elected Government into confidence.

The Army chief had requested Sharif to approach the US to pressure India not to "kill" Pakistani forces personnel.

Musharraf told Sharif not a single Pakistani would return alive without US support, PML-N Information Secretary Muhammad Siddiqul Farooq, said in a statement reacting to Hussain's assertion that Sharif was well informed about the Kargil operation.