Photographers William Daniels, of Panos Pictures, and Paul Conroy, as well as Le Figaro contributor Edith Bouvier remain trap in Homs, Syria, more than 48 hours after they survived a devastating attack that claimed the lives of Rémi Ochlik and Mrie Colvin.

While Daniels escaped the attack without injury, Bouvier and Conroy suffer leg fractures, requiring urgent care. But, the Syrian army is surrounding the city, preventing their evacuation.

The French government has called on Syria "to immediately halt all attacks and to respect the humanitarian obligations incumbent upon him, both with regard to journalists, of course, and the entire Syrian civilian population," Alain Juppé, the French foreign minister, says in a statement.

He adds: "The Syrian authorities have once again failed in a fundamental duty, namely the duty to guarantee the security of journalists and the freedom of information."

The French government has requested that the Syrian authorities provide secure medical access to assist the injured, with the support of the International Committee of the Red Cross.

The UK's Foreign Office has also asked for Syria "to facilitate immediate arrangements for the repatriation of [Ochlik's and Colvin's] bodies, and for the medical treatment of the British journalist injured in the same attack."

According to Panos Pictures - Daniels' agency - "the pressure groups Human Rights Watch and Reporters Without Borders together with various national governments are coordinating efforts to evacuate the journalists out of Syria into a neighbouring country."

In a video appeal to his government, Englishman Conroy said that he was being looked after by the Free Syrian Army medical staff, "who are treating me with the best medical treatment available. It's important to add that I'm here as a guest and not captured. Obviously any assistance that can be given by government agencies would be welcome and we will work on the same premise on the ground."

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