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UPDATE 1-Iran's foreign minister leaves Biarritz G7 summit

(Adds Zarif departure)

BIARRITZ, France, Aug 25 (Reuters) - Iranian foreign minister Mohammad Javad Zarif has left the G7 summit in Biarritz, a Reuters witness said on Sunday.

A French official said Zarif had held talks for almost 3.5 hours, including 30 minutes with President Emmanuel Macron.

The official said the talks had been positive and would continue during the leaders' summit this evening and tomorrow. (Reporting by Emilie Delwarde and Marine Pennetier; Writing by John Irish)