The explosion late on Thursday was a bomb placed under the car of a member of the Popular Front for the Liberation of Palestine-General Command, the Palestinian group said. It blamed the rebel Free Syrian Army for the attack.
Yarmouk has been pulled into Syria’s fighting before, most recently earlier this month, when clashes in and around the camp killed and wounded dozens.
When the unrest began, the country’s half million Palestinians struggled to stay on the sidelines, but in recent months, many have started supporting the uprising although they insisted the opposition to the regime should be peaceful. Others, like the PFLP-GC, stood by al-Assad. Earlier this month, the PFLP-GC clashed with anti-government Palestinian gunmen in Yarmouk.