Warplanes bombarded a Palestinian refugee camp in southern Damascus on Sunday for the first time since the start of Syria's more than 21-month conflict, the Syrian Observatory for Human Rights said.

"Warplanes staged an air strike on an area near Al-Bassel hospital... in Yarmuk camp, hurting several people," said the Observatory. According to initial reports cited by the watchdog, there may also have been people killed in the strike.