A notorious British pedophile who was serving 22 concurrent life sentences for abusing 22 children in Malaysia — and up to 200 during an eight-year spree — was stabbed to death in a prison in England, according to reports.

Richard Huckle, 33, was found dead Sunday inside his cell at the high-security Full Sutton Prison in North Yorkshire after being attacked with a makeshift knife, according to the BBC.

“Humberside Police are working closely with the Prison Service to investigate the death of an inmate and at this time we are treating the death as suspicious,” police said in a statement. “It would be inappropriate to comment further while a police investigation is ongoing.”

In June 2016, the prolific predator was sent away to rot in prison after admitting to the horrific crimes against children between the ages of 6 months and 12 years from 2006 to 2014.

Huckle, of Ashford, Kent, pleaded guilty to 71 offenses involving 22 children, but it is believed there were many more victims throughout Southeast Asia, including in Camodia, where he targeted a 2-year-old child in March 2006.

Under the pretext of being a photographer, English teacher and philanthropist in the impoverished areas of the Malaysian capital of Kuala Lumpur, he targeted the kids, including one from the age of 3 to 10, according to the Guardian.

Huckle shared photos and videos of his despicable acts with fellow pedophiles across the globe on the dark web through a website called The Love Zone, which had about 9,000 members before being shut down.

Investigators found a scorecard on his computer in which he awarded himself “Paedopoints” for various kinds of acts of depravity against 191 boys and girls.

He also produced a 60-page online pedophile manual entitled “Pedophiles & Poverty: Child Lover Guide,” which advised others on how to abuse children and escape detection.

Trial Judge Peter Rook described the document as “truly evil.”

“Your offending behavior became entrenched in your everyday life. Your life revolved around your sexual activities with young children. Your distorted beliefs in respect of children are deep-seated. Your self-delusion knows no bounds,” Rook told Huckle during sentencing in 2016.

“It is also clear that, had you not been arrested, you planned to continue the same lifestyle using the expertise that you were keen to show off to and share with other abusers so as to continue your sexual exploitation of the children of such communities,” he added.

The monster was eventually caught as part of an Australian probe into the sick website.

British police arrested him at London’s Gatwick Airport in December 2014 as he returned home from Malaysia to spend Christmas with his parents while carrying a heavily encrypted computer and camera that contained more than 20,0000 images of child sex abuse.

In online posts, Huckle had bragged that “impoverished kids are definitely much easier to seduce than middle-class Western kids.”

Commenting on one of his victims, he boasted: “I’d hit the jackpot, a 3yo girl as loyal to me as my dog and nobody seemed to care.”

He also wrote that he hoped to marry one of the girls whom he had known since she was 7 years old — and thought he could “influence her young mind to mold her into the perfect wife,” according to the Guardian.

With Post wires