Meanwhile, government troops took control of a key village as the regime presses its offensive to clear a path between Damascus and the Mediterranean coast.
With the help of Lebanese Hezbollah fighters, President Bashar Assad's regime has been chasing rebels from long-held strategic areas linking the capital, Damascus, with the government stronghold areas along Mediterranean coast. It gained momentum this week after seizing the strategic city of Qusair and the army has begun advancing north toward the cities of Homs and Aleppo.
Abu Bilal al-Homsi, an activist in the old quarter of the city of Homs who has links with several rebel groups, said via Skype that rebels sustained heavy losses late yesterday as they attempted to flee the village with their wounded and civilians. Al-Homsi asked to be identified by his alias because of security concerns.
The state-owned Al-Ikhbariya TV said the attacker detonated the explosives-laden car in a busy area near a roundabout in the Homs neighbourhood of Adawiya, which largely houses Alawites, members of a minority sect that is an offshoot of Shiite Islam.
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Television footage showed frantic residents running around, blood splattered on the ground and a badly mangled car. Other cars on the street were also damaged. A reporter from the station on the scene said the car was carrying about 100 kilograms of explosives.
The Britain-based Syrian Observatory for Human Rights, which relies on a network of informants inside Syria, confirmed that the car was booby-trapped. It also said seven were killed, citing preliminary reports.
The rebels are largely from Syria's Sunni Muslim majority and have been joined by Sunni fighters from other countries, while the government is backed by fighters from the Shiite militant Hezbollah group, making the conflict increasingly sectarian in nature.