Some 3,894 Palestinian refugees have been killed in Syria since the start of the conflict in 2011, Action Group for Palestinians in Syria said on Sunday.
The NGO said that its teams documented the killing of 1,408 Palestinian in Yarmouk and 263 in Daraa, 202 in Khan Al-Sheikh, 167 in Al-Nirab and 123 in Al-Husayniyeh.
The report said that 1,198 were killed in airstrikes and artillery bombings, 1,063 were killed in direct gunfire and 558 were killed under torture.
In addition, thousands of the Palestinian refugees were wounded and maimed across Syria.
Syrian security forces are still hiding information about more than 1,700 Palestinian refugees detained inside regime prisons, the report said.