THE man found guilty of causing the death of Haringey toddler Baby P had to undergo hospital treatmant after being attacked in prison.

Stephen Barker, 33, who is serving a life sentence in top-security Wakefield Prison, West Yorkshire, was attacked by another inmate on Friday.

He was knocked out with a "single punch", according to The Sun newspaper.

Barker later received treatment in the jail's hospital after the attack but has now recovered, a prison spokeswoman said.

Barker, who grew up on the Ferry Lane Estate, in Tottenham Hale, was found guilty of causing or allowing the death of 17-month-old Peter Connelly, dubbed Baby P by the press.

He was also found guilty of raping a two-year-old girl in a separate trial.

The toddler's mother, Tracey Connelly, 28, and Barker's brother, Jason Owen, 37, of Bromley, were also convicted.

The trio have since become notorious hate figures and internet vigilantes have set up campaigns on social networking sites urging inmates to resort to take matters into their own hands.

Baby P had suffered 50 injuries including a broken back, ripped off fingernails and eight fractured ribs.

A prison spokeswoman said: "On the morning of December 11, a prisoner at HMP Wakefield was assaulted by another prisoner. Thanks to the prompt and professional action of officers at HMP Wakefield who intervened, this situation was brought under control almost immediately.

"The prisoner who was assaulted received treatment in the prison's healthcare wing and the assailant is currently in the segregation unit."

During the trial, the court heard Barker had been separated from other prisoners and was being kept in the same cell formerly used by child killer Ian Huntley.