Sharif met withthe leaders of All Parties Hurriyat Conference PoK chapter at Muzaffarabad.
PoK 'President' Sardar Masood Khan and 'Prime Minister' Raja Farooq Haider were also present at the meeting.
"Pakistan will continue to extend moral, diplomatic and political support to Kashmiris," Sharif said, alleging that atrocities in Kashmir had touched extremes.
"Oppression is destined to end, and truth will prevail," he said inreference to the ongoing violence in Kashmir.
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Callingupon the UN to fulfill its obligation in accordance with its own resolutions, he said: "The movement of Kashmiris will ultimately succeed as the history has precedents that such movements could not be suppressed with oppression. Pakistan willraise voice for the resolution of Kashmir dispute at all fora."
Hurriyat leaders thanked Shariffor taking them into confidence before his visit to UNGA.
Sharif is likely to deliver a speech at the UN General Assembly session on September 21.