The LCC said rebels Wednesday bombarded the Mannagh air base, which has been subjected to almost daily attacks since late last month.
The Observatory also reported that eight shells struck the Palestinian refugee camp of Yarmouk in the capital forcing some of the residents to flee the area that is mostly in the hands of rebels.
Anti-regime activists say more than 45,000 people have been killed since the uprising against Assad began in March 2011. Since then, it has evolved into a full-scale civil war with scores of armed groups across the country fighting regime forces.
Copyright 2013 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.