A clip apparently showing Iraqi soldiers captured by the Islamic State of Iraq and the Levant (ISIS) at a border post appeared online yesterday.
The clip purportedly shows an Iraqi jihadist questioning the bound men on the ground, before they were later killed.
Both clips have been shared widely on YouTube, which were also posted to Abu Hamza Mohammadi's Facebook account, who sources suggest is the jihadi pictured in the clips - but this cannot be independently verified.
According to one translation of the first video, provided by Storyful's Open Newsroom, militants order the prisoners to chant the slogan "Baqiya", which means "ISIS will remain in existence".
An unidentified armed man makes the prisoners nod in agreement, by grabbing their hair as he walks down the line.