A new video released by Islamic State (IS) shows its fighters cutting off the heads of eight men said to be Shia Muslims.

The video posted on social media said the eight men were beheaded in the central Syrian province of Hama.

The men, wearing orange uniforms with their hands tied behind their backs, were led forward in a field by teenage boys.

They were then handed over to a group of IS fighters - with each fighter receiving a knife from one of the boys, before beheading the men.

An IS fighter speaks in the video, using a derogatory term for Shias and calling them "impure infidels".

IS has beheaded scores of people since capturing large parts of Iraq and Syria last year.