DAMASCUS, (PIC)-- Twelve Palestinian refugees were killed in Syria on Friday during attacks by the regular army, raising the death toll among Palestinians, who have been killed since the start of fighting in Syria, to 843.

The workgroup for Palestinians in Syria said that the killing was the result of the explosion of a car bomb in Sbeineh refugee camp, in addition to the targeting of the camp by the regular army's aircraft and snipers' bullets.

The group said in its official Facebook page that the Yarmouk refugee camp has also witnessed violent clashes between the free army and the regular army, and that a car bomb had exploded in al-Rijah courtyard in the camp, causing significant material damage.

It noted that the regular forces, deployed at the entrance to the Yarmouk refugee camp, have been preventing the entry of gas, medical supplies and food, and appealed to the local and international authorities to intervene in order to end the suffering of the camp, particularly the hospitals.

Armed confrontations between the free army and the regular army have also erupted in Husseiniyeh camp and Handarat camp in Aleppo, resulting in the killing of a number of refugees and the injury of many others.

Meanwhile, the residents of al-Aydin refugee camp in Hama have been suffering from power outages in most of the camp's areas for several days in addition to shortages of basic foodstuffs.

The workgroup for Palestinians in Syria added that an armed group had attacked a vehicle carrying food aid to the Neirab camp in Aleppo, and seized all its contents.