Al-Qaida-linked rebels execute 11 soldiers loyal to Assad for 'massacres' against Syrians
Newly released video is second in two days to show executions by self-described Islamist fighters.
Fighters of the Al Qaida-linked Nusra Front in Syria executed 11 men they accused of taking part in massacres by Syrian President Bashar Assad's forces, a video released on Thursday showed.
A man whose face was covered in a black balaclava shot each man in the back of the head as they kneeled, blindfolded and lined up in a row in the eastern province of Deir al-Zor.
"The sharia court for the eastern region in Deir al-Zor has sentenced to death these apostate soldiers that committed massacres against our brothers and families in Syria," the executioner said on the video.
Islamist militants with black flags shouted "God is great" as each man was shot. The executioner returned to some victims, firing more bullets into them to make sure they were dead.
The video is the second in two days to show such executions by fighters who say they are from Al Qaida-linked groups.
A video posted online on Wednesday from the northern province of Raqqa, which is controlled by Islamist rebels, showed three blindfolded men sitting on the curb of a central roundabout before being shot in the head with a pistol.
A man speaking in the video said the executions were revenge for killings in the coastal town of Banias two weeks ago. Photos and videos of the alleged Banias massacre showed dozens of mutilated bodies, many of them children, lying in the streets.
Videos of executions and torture have become increasingly common in Syria, where more than 94,000 people have been killed in a conflict now in its third year, according to the Syrian Observatory for Human Rights, a pro-opposition monitoring group.