Iran and six world powers have agreed on an agenda for negotiations over Tehran's disputed nuclear program and will meet again in March in Vienna, a senior Iranian official was quoted as saying.

Negotiators from Iran and the powers - the United States, France, Germany, Britain, China and Russia - have been meeting since Tuesday in the Austrian capital to hammer out an agenda for reaching an ambitious final settlement to the decade-old standoff over Tehran's atomic activities.

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Iranian Deputy Foreign Minister Abbas Araqchi told the official IRNA news agency: "The involved parties have agreed on an agenda and a framework and the next round of talks will be in the second half of March in Vienna."

The meeting was due to resume on Thursday morning, expected to be followed by a news conference.

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