Another stunning video from Syria has emerged on YouTube showing jihadists of the rebel al-Nusra Front executing 11 men accused of playing a role in massacres by President Bashar al-Assad.
Earlier this week, footage posted online by a group loyal to the Assad regime showed a man, knife in hand, slicing parts of a dead soldier's torso before turning to the camera and putting the heart in his mouth.
According to Peter Bouckaert of the New York-based Human Rights Watch, the man was Abu Sakkar, a founder of the rebel Farouq Brigade which is part of the al-Nusra Front.
Al-Nusrahas been designated a terrorist organisation in the United States and is widely reported to be an al-Qaida associate.
The fresh clip depicts a man covered in a black balaclava shooting each man in the back of the head as they kneel. The men, allegedly from Assad's troops, are blindfolded and in a row. Two Islamist militants in the back, holding black flags, chant Allahu Akbar (God is Great) as each man is shot.
"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.
Reuters has also reported another video posted online in the northern province of Raqqa.
The footage shows a man shooting three blindfolded men accused of the killing rampage in the coastal town of Banias two weeks ago. Photos and videos of the alleged Banias massacre show 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.