article_snippet.sent: ISIS militants besieging a Palestinian refugee camp in Syria's capital have savagely beheaded Gaza-based leaders, ISIS has been claimed.
article_snippet.sent: Having seized control of up to 90 per cent of the Yarmouk camp in south Damascus, the jihadis posted gruesome images showing the severed heads of two alleged members of Aknaf Beit al-Maqdis online.
article_snippet.sent: ISIS decision to publicly execute the men - as well as reports of the deaths of dozens more Palestinians during clashes inside Yarmouk - has prompted outrage in Gaza, where hundreds of furious Hamas supporters swore bloody revenge on a Hamas-linked group during a march yesterday.
article_snippet.sent: Government forces and different rebel factions are clashing and 'we pay the price,' Palestinian President Mahmoud Abbas said.
article_snippet.sent: The Observatory said the fighting has killed 26 people since Hamas-linked groups' clashes with ISIS in the camp first broke out.
article_snippet.sent: Palestinian blood is not cheap,' Mohammed Abu Askar, a local Hamas leader, told the crowd, threatening revenge for the Islamic State incursion into Yarmouk.
highlights_snippet.sent: Two members of a Hamas-linked group were beheaded, witnesses said .
  
highlights_snippet.sent: Now Gaza-based leaders have sworn bloody revenge on ISIS terrorists .