The Syrian Observatory claimed forty people were killed in Homs on Thursday, and some 120 were wounded in the explosion of an arms depot.
A huge explosion hit the central Syrian city of Homs, blasting a fireball hundreds of meters into the air, video posted on the Internet on Thursday by opposition activists showed.
Activists said the explosion, which appeared to be significantly larger than most bombs used daily by either side in the two-year-old Syrian conflict, ripped through the southeastern neighborhood of al-Nozha.
The neighborhood is majority Alawite, the same sect as President Bashar Assad. Sunni Muslim insurgents have targeted Alawite areas, especially military positions, around the country with bombs and mortars