VIENNA - A comprehensive Iranian nuclear deal is very likely to be reached after intensive meetings between Iran and six world powers, said Chinese Foreign Minister Wang Yi on Thursday.

"The possibility of reaching a deal is very high, and a deal should be agreed," Wang told reporters.

Foreign ministers from Iran and P5+1 group are meeting to finalize the possible historic nuclear deal to resolve the decade-old standoff between Iran and Western states.

"I think the basic elements for reaching a comprehensive nuclear deal has been provided, the timing to resolve the Iranian nuclear issue has come," said Wang after meeting with foreign ministers involved in the ongoing nuclear negotiation.

There is "no excuse to stop before the finish line of the Marathon negotiation," he said.

Iran and five UN Security Council permanent members plus Germany have been negotiating over the past 16 months to reach a long-term deal over Tehran's disputed atomic plan.

During the period, Iran agreed to suspend some sensitive nuclear activities. In return, the Western states would partially relief some of the sanctions against Tehran.

After arriving in Austria, Wang held bilateral meetings with Iranian Foreign Minister Mohammad Javad Zarif, US Secretary of State John Kerry and French Foreign Minister Laurent Fabius in Palais Coburg.