If confirmed, the attacks would heap further pressure on Western countries supporting Syrian rebels to intervene in the conflict, which the United Nations says has claimed more than 70,000 lives.
President Barack Obama has called the use or movement of chemical weapons a "red line," but has thus far ruled out greater US involvement despite increasing reports of limited chemical attacks by regime forces.
London sent a letter to the world body that included "details of new incidents since April," a Western diplomat said.
The United Nations has appointed a team of investigators led by Swedish arms inspector Ake Sellstrom, but they have not been granted permission to enter Syria by President Bashar al-Assad's regime.
"We continue to inform the secretary general and Mr Sellstrom of any information as and when we get information of alleged chemical weapons use," Britain's UN envoy Mark Lyall Grant said, without providing further details.
A top UN envoy said last week there are "mounting reports" of the use of chemical weapons in Syria's civil war and called on the Damascus government to let in UN investigators.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
