Iranian Foreign Minister Javad Zarif attends a joint press conference after meeting Norwegian Foreign Minister Ine Eriksen Soereide in Oslo, Norway, on August 22, 201
At the flight tracking site flightradar24.com, an Iranian government jet landed at Biarritz airport, which was closed for the duration of the summit from Saturday to Monday.
Iranian state television cited the State Department on the grounds that Zarif would not hold talks with the summit delegation of US President Donald Trump.
Trump was asked to comment on reports that Zarif had landed in Biarritz and said, "No comment."
The office of French President Emmanuel Macron, who hosts the G7 summit, declined to comment, as did the French Foreign Ministry.
European leaders have sought to reassure a deepening confrontation between Iran and the United States since Trump withdrew his country from the 2015 Iranian international nuclear deal and imposed sanctions on the Iranian economy.
Early Sunday at the G7 summit, Trump seemed to brush aside French mediation efforts with Iran, saying he was glad that Paris was turning to Tehran to defuse tensions, and that he would continue his own initiatives.
France said the G7 leaders had agreed that Macron should hold talks and forward messages to Iran. However, Trump, who pushed for a policy of maximum pressure on Iran, distanced himself from the proposal and said he had not even discussed it.
coverage by Richard Lough and John Irisj; Writing by John Chalmers; Edited by Toby Chopra