The leader of Britain's worst kindergarten needed 40 stitches after being attacked with a makeshift knife in prison.
The sex beast Adhel Ali, who abused and mistreated young girls, had a deep wound running from his neck to his shoulder.
His assailant used two razor blades embedded in a strip of cardboard as a weapon in the top security prison in Wakefield, West Yorkshire, according to The Sun.
A source said the October 21 attack was triggered by a smoldering dispute between Ali and another inmate.
Prison officials divulged them, but they were still angry at each other.
The other detainee later went back to his cell and found that he was covered in excrement.
They added, "He turned around, accusing Ali and using the blade straight back to him, it was a really nasty wound, he lost a lot of blood."
He is currently working 18 years for his role in the care of 1,000 children aged 13 in Telford.
Ali was imprisoned with his brother Mubarek, 35. The couple sold teenage girls for sex over an Indian restaurant after grooming them.
They were convicted when youth workers raised alerts when teenagers in Wellington, Shropshire, started telling them the same stories about the men they saw.
During the trial, the judges heard disturbing evidence from four victims aged between 13 and 16 between 2007 and 2009 over a period of two years.
Ali will be paroled in 2019.
A spokeswoman for the prison service said, "A prisoner in HMP Wakefield was attacked on October 21 by a fellow inmate who is now being investigated by the police."