The explosion, which took place late yesterday, was the latest blow to the rebels shortly after the assassination Friday of a powerful rebel leader on the outskirts of Damascus.
The developments could boost the position of the Damascus government ahead of Syria peace talks in Geneva next month.
The Britain-based Syrian Observatory for Human Rights reported the explosion in the village of Kfar Shams.
Ahmad al-Masalmeh, a Daraa-based opposition activist, said explosives were planted at the farm and detonated once the militants had gathered there.
Syria's state news agency reported that several fighters of the Islamic Muthana Movement were killed and two of their "dens were demolished at Kfar Shams."
The village is known to house many chicken farms, which supply large parts of Syria with eggs and the attack apparently took place in one of the farms.
The identities of the slain fighters were not immediately known and it was not clear if they all belonged to the Muthana Movement or other factions.
The movement itself is a relatively minor Daraa-based group of Islamic insurgents.
During past months, the area has been the scene of intense clashes that have pitted Syrian troops and their allies from the Lebanese militant Hezbollah group against an array of Islamic insurgent groups, including the Muthana Movement.
President Bashar Assad's forces have been on a major push since Russia began its air campaign in Syria on September 30.
Syrian troops and allied militiamen have launched ground offensives in different parts of the country, including areas near the capital, Damascus.
A number of senior commanders of the Army of Islam and those of the ultraconservative Ahrar al-Sham and the Faylaq al-Rahman groups were also killed.
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
