From Charlotte Alfred writing at the Huffington Post:
The Islamic State militant group released a video on Saturday claiming to show the mass execution of Syrian government soldiers in the historic amphitheater of Syria’s Palmyra.
The video shows 25 men lined up on the stage of the ancient theater in front of the extremist group’s flag. They are then shot dead by boys, who appear to be in their teens, before an audience gathered at the heritage site. The 10-minute video was released by the group’s local branch in the Syrian province of Homs, according to the SITE intelligence group.
The Syrian Observatory for Human Rights first reported that the Islamic State group had publicly executed a group of men in Palmyra’s amphitheater in late May, shortly after the militants captured the area from government forces. The monitoring group said the men were accused of fighting for the Syrian government, and that local residents were forced to come and watch the mass execution.
Islamic State supporters also celebrated the killings on Twitter at the time, Reuters reported.