Experts from the Organization for the Prohibition of Chemical Weapons (OPCW) are due to arrive in Douma on Wednesday to investigate an alleged chemical attack, Igor Kirillov, head of Russia's radiological, biological and chemical protection unit said.
OPCW nine-member team arrived in Syria over the weekend but weren't granted access to Duoma by Syrian and Russian officials over "pending security issues", OPCW director general Ahmet Uzumcu said.
Kirillov told reporters the roads need to be de-mined, cleared and tested by UN security services before OPCW's deployment. "On Wednesday is when we plan the arrival of the OPCW experts," he added.
The United States accused Russia earlier of visiting the site and possibly tampering with the evidence, a claim Moscow denied.
