In Syria, U.S.-led coalition air strikes against Daesh millitants have killed thousands of civilians since they entered the course of Syrian war four years ago.
Syrian Observatory for Human Rights said death toll of civilians is part of a total of 12,000 rebels and ultra-radical militants killed by U.S.-led strikes.
The UK-based watchdog group said they were killed by the U.S.-led attacks on Syrian military positions.
Meanwhile, Syrian government has repeatedly urged the UN to push for the withdrawal of the coalition from Syria.