Four French journalists held hostage in Syria since June have been found blindfolded and bound on the Turkish border.

Turkish soldiers found the four in good health on Saturday after they were released by a radical Muslim rebel group.

Nicolas Hénin, Pierre Torres, Edouard Elias and Didier François were in "good health, in spite of the very gruelling conditions of their captivity", said the French president, François Hollande, in a statement. He said the four would return to France in the coming hours, and it did not provide any details about the conditions of their release.

The journalists had been kidnapped by the Islamic State of Iraq and the Levant, also known as Isis, but were transported to the border by an unknown group on Friday night. The objective of Isis is to establish an Islamic state in the land it controls in northern Syria and is often in conflict with other rebels as well as the government.

François, a veteran war correspondent working for Europe 1 radio, and Elias, a photographer, were abducted in early June on their way to Aleppo. Hénin, who was working for Le Point magazine and Torres, reporting for French-German television channel Arte, were taken later that month.

Last month Isis released Javier Espinosa, a reporter for el Mundo, and freelance photographer Ricardo García Vilanova.

Around 30 journalists are believed to have been kidnapped in Syria. Some are held by Isis and others by the government and other groups. Many media organisations do not reveal if their staff are kidnapped in order to facilitate negotiations for their release.