Prime Minister Yousuf Raza Gilani expects to meet US President Barack Obama during a nuclear security summit in South Korea next week, a Pakistani official said Friday.

US officials were not immediately reachable to confirm the meeting, which would be the most senior face-to-face meeting between Pakistan and the United States since American forces killed Osama bin Laden in Pakistan last May.

Pakistani-US relations hit an all-time low after that covert raid, which Washington said was carried out without Islamabad's knowledge, and subsequent US air strikes killing 24 Pakistani soldiers last November.

But on Monday, Pakistani lawmakers are to start debating new parameters for getting the troubled relationship back on track, expected to see Pakistan eventually reopen its Afghan border to NATO convoys after a four-month closure.

"The prime minister will meet President Obama on March 27 on the sidelines of the international conference in Seoul," a senior Pakistani official told AFP on condition of anonymity.

"They will discuss bilateral relations and progress in the war on terror," the official added. (AFP)