Graphic photos allegedly documenting their execution are circulating on social media; Radio Sawa's Zaid Benjamin tweeted four of the photos, and claimed that the pair was murdered for engaging in a "homosexual relationship."
The SITE intelligence group has confirmed the reports, saying that the jihadist group itself released a 'photo report' of the execution on the Internet. The perpetrators are members of the Homs division of Islamic State (also known as ISIS), according to SITE.
The photos document the execution in graphic detail: the blind-folded men are led to the top of a three-level building, where an ISIS militant reads out their 'judgment'; they are then thrown off the building before being stoned to death on ground level. One of the photos shows a crowd of people watching the unfolding execution.
ISIS has released multiple videos and photos of executions, including of other men accused of being gay. Earlier in July, the jihadist group released a video showing 25 Syrian soldiers being shot dead by teenage boys in the city's ancient amphitheater.
Palmyra, a UNESCO World Heritage Site home to 2,000-year-old structures, was captured by ISIS in May. Islamic State, which aspires to establish a global caliphate ruled by a harsh interpretation of shariah law, rules over wide swathes of both Syria and Iraq.