Opposition activists have posted a video purporting to show at least 51 muddied male bodies alongside a river bank in the rebel-held Bustan al-Qasr neighbourhood of Aleppo.
The video, which is too graphic to post, follows a man walking along a river bank past dozens of male bodies with their hands tied and blood coming from their heads.
More top news
Children's pocket money payouts have risen more than twice as fast as their parents' wage increases since the late 80s, research has found.
The superhero appeared to join pro-democracy protests in Hong Kong which have been going on for over a month.
MPs and academics claim the extra light in the evenings would save lives on the roads and benefit public health.