Pakistan, a non-permanent member of the UN Security Council, is unlikely to vote in favour of the second resolution calling for an attack against Iraq.
"Most likely it would abstain if the resolution were put to vote," local reports quoted Pakistani officials as saying on Saturday.
Islamabad indicated its stand on Friday to visiting US Assistant Secretary of State Christina Rocca, who came to seek support for the resolution introduced by the US, the United Kingdom and Spain.
Rocca met President Pervez Musharraf and other leaders and laid out a strong case for Pakistan supporting the on Iraq.
During the talks, Pakistan officials reportedly told Rocca that Islamabad preferred to wait till UN Chief Inspector Hans Blix submitted his report to the Security Council.