A UN security team came under fire in Syria while doing reconnaissance for inspectors to visit sites of a suspected chemical weapons attack, and officials said it was no longer clear when the inspectors would be able to go in.
The inspectors from the Organisation for the Prohibition of Chemical Weapons are in Syria to investigate an April 7 incident in which Western countries and rescue workers say scores of civilians were gassed to death by government forces.
OPCW Director-General Ahmet Üzümcü said the United Nations Department of Safety and Security (UNDSS) had decided to carry out reconnaissance at two sites in the town of Douma before the inspectors would visit them.
"On arrival at site one, a large crowd gathered and the advice provided by the UNDSS was that the reconnaissance team should withdraw," he told a meeting at the watchdog's headquarters in remarkes it later released. "At site two, the team came under small arms fire and an explosive was detonated. The reconnaissance team returned to Damascus."
The United States, Britain and France fired missiles at Syrian targets on Saturday in retaliation for the suspected chemical use. They say the arrival of the inspectors is being held up by Syrian authorities who now control the area, and that evidence of the chemical attack may be being destroyed.
Damascus and its ally Moscow deny that any gas attack took place, that they are holding up the inspections or that they have tampered with evidence at the site. Britain's ambassador to the OPCW Peter Wilson said it was now unclear when the inspectors would be able to reach it.
The rebel group based in Douma announced its surrender hours after the suspected chemical attack, and the last rebels left a week later, hours after the Western retaliation strikes.
The US-led intervention has threatened to escalate confrontation between the West and Assad's backer Russia, although it has had no impact on the fighting on the ground, in which pro-government forces have pressed on with a campaign to crush the rebellion.
Assad is now in his strongest position since the early months of a seven-year-old civil war that has killed more than 500,000 people and driven more than half of Syrians from their homes.