A French delegate to a conference of socialists in Lebanon has said he was detained by gunmen linked to the Islamist movement Hezbollah.
Karim Pakzad said he was held for four hours after being stopped while taking photographs from an open-top car in an area known as a Hezbollah stronghold.
France described the incident as "totally unacceptable".
Hezbollah said the two were released after it had made sure Mr Pakzad and his companion were not Israelis.
Mr Pakzad, who was representing the French Socialist Party at the two-day Socialist International conference in Beirut, said he had been taking pictures of a mosque with a friend when he was approached by armed men.
He said he was blindfolded and taken to an unidentified location where he was held in isolation and his cell phone, wallet and medicine were taken away.
Hezbollah said Mr Pakzad's photographic activities
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