Foreign Minister Alain Juppe recalled ambassador Bruno Foucher for consultations in November after the attacks, which forced Britain to close its embassy and evacuate staff.

“I can confirm our ambassador returned to Tehran last Friday,” the official told Reuters.

European Union states have agreed in principle to an embargo on Iranian oil, part of the latest Western effort to ratchet up pressure on Tehran over its nuclear program, although the embargo could take a few months to come into effect.