Chemical weapons inspectors had to delay visiting the site of an alleged chemical weapons attack in Syria's Douma on Wednesday after a UN security team reported gunfire at the location a day earlier, sources briefed on the team's deployment told Reuters.

Details of the shooting were unclear, but weapons inspectors from the Organisation for the Prohibition of Chemical Weapons have pushed back their visit which was supposed to happen on Wednesday, the sources said.

The inspectors arrived in Damascus at the weekend to examine the site of a suspected gas attack in nearby Douma which killed dozens of people and led to U.S-led missile strikes.
Syria's UN ambassador said on Tuesday a United Nations security team had gone to Douma ahead of the planned OPCW visit.