This was conveyed by Sharif to US Secretary of State John Kerry who telephoned the Prime Minister.
"Kerry extended full support to the Prime Minister to find out the truth in the Pathankot terror incident," a statement issued by the Pakistan PMO said.
It said Sharif "told Secretary Kerry that we are swiftly carrying out investigations in a transparent manner and will bring out the truth. The world will see our effectiveness and sincerity in this regard, the Prime Minister added," according to the statement.
Kerry said the US hopes that talks between India and Pakistan will continue despite the fact that terrorists have tried to thwart it because "continuation of India-Pakistan talks is needed in the interest of regional stability and the leadership role by both the Prime Ministers is required to ensure continuous dialogue," said the Pakistan PMO statement.
Sharif said Pakistan would not allow anyone to use its soil to carry out terror operations abroad, it added.