Their execution was later confirmed to have been committed by a firing squad, according to a document published by Hamas's military wing in the West Bank.
Gabay was murdered while working at the musical festival in Kibbutz Re'im, and has been considered missing since the attack, where more than 300 were killed.
Sergei Khadzhikurbanov, a former law enforcement officer, was sentenced to 20 years in prison in 2014 for organizing the killing.
A visit to Kfar Aza left me speechless, nearly ill, and forever changed.
"Inhuman," "savage," "barbarian," "Nazi" - none of these can adequately describe the level of depravity Hamas committed.
Loay Alnaji, who is suspected in the murder of 69-year-old Paul Kessler, had openly shared pro-Hamas content online, according to numerous media reports.
It was only when I went this week to watch the IDF movie, designed to highlight the horror of that holiday morning that had begun so typically, that the before and after narratives fell into place.
“When a man who’s in his 60s gets pounded in his face for standing up for Israel, every Jew needs to do something,” one Jewish father told JTA.
Emily's father, Thomas Hand, had previously expressed his initial fears that his daughter was held hostage in Gaza.
A video capturing part of the event was posted to the social media platform StopAntisemitism, as well as a photo of the alleged attacker.