"A mother told her four-year daughter to go home and she refused and then the mother told her unintentionally 'go home and I swear to God that I will behead you if you don’t' and one of the ISIS members heard this and told the mother since you swore to God you should behead her but the mother strongly opposed," A Syrian women who has recently escaped from Raqqa said.
"But they beheaded the little girl and soaked her mother's hands in her daughter's blood," she added.
The woman who called for anonymity also explained how the ISIS has filled Tal Abyaz street to al-Naeem square in Raqqa with heads of slaughtered people to create horror among the people and then mutilated the body of a young man who refused to join the terrorist group and then hung his head.
"They rape women, take children to war, loot houses and threaten people in Raqqa with beheadings if they don’t agree with their daughters' marriage with the ISIS members," she added.
The crime was revealed after an earlier report by the British Mirror newspaper last year that the ISIS militants fed a desperate mum the mutilated remains of her son - after telling her it was cooked meat and rice, it was claimed today.
The son had been captured and taken prisoner by the ISIS militants in Mosul, Iraq.
The worried mum then bravely visited the terror group's headquarters in a bid to speak to her loved one.
ISIS fighters told the mum she should eat before seeing her son because she had travelled a long way.
However, after giving the mother cooked meat, rice and soup, she was horrified to be told she had just eaten her son, FNA reported.