Sara Sharif’s killer father had his throat slashed open by a notorious double murderer, it has been reported.

Steven Sansom - who killed Sarah Mayhew, 38, last year and cut her body up with power tools - allegedly attacked Urfan Sharif on New Year’s Day with a tuna can lid.

The 46-year-old, who also murdered a taxi driver when he was 19, is said to have cornered Sharif in his cell with the help of another inmate, sources told The Sun.

It is alleged the prisoners at HMP Belmarsh were sickened by the horrific murder of Sharif’s 10-year-old daughter Sara at the family home in Woking, Surrey, last year.

The schoolgirl was hooded, bitten, burned and eventually beaten to death before her body was found with at least 71 injuries after the family fled to Pakistan.

A prison insider has now claimed: 'Everyone is talking about how it was Sansom who got to Sharif.

'He and another inmate apparently pounced on him as he walked back to the wing after a shower, forced him into a cell and slashed him.

‘The other bloke, who is also a murderer, held the door shut.’

Sansom is facing a life sentence for the murder of Ms Mayhew whose legs, arms and head were found in a field in Croydon last April.

Her torso was later discovered in Mitcham - some nine miles away from where the rest of her body was found.

Sansom, who was known to Ms Mayhew, pleaded guilty to the horrific crime in September and is due to be sentenced this month.

He was previously convicted in 1999 for the murder of cab driver Terrence Boyle, 59, who was stabbed in the throat and back.

Sansom had called Mr Boyle’s firm, Kendal Cars in Station Road, Croydon for a lift from East Croydon station to his home in New Addington.

But he knifed him as the car pulled up and escaped with just £25.

Following Sansom’s alleged attack on New Year’s Day, it is now believed that Sharif has a ‘target on his back’ — and he will be ‘always be looking over his shoulder’.