A 23-year-old has been found guilty of stabbing to death a man who killed a toddler in 1985.
Ieuan Hartley murdered David Gaut after discovering he had previously served 32 years in jail for killing 15-month-old, Chi Ming Shek.
Newport Crown Court heard that Mr Gaut was killed on August 2 last year, after his neighbours in Long Row, New Tredegar, discovered he had killed a child.
Prosecutors alleged Mr Gaut was lured to the house of his 51-year-old neighbour, David Osborne, before being attacked with at least two knives, and stabbed 150 times while he was still alive.
Screwdriver used to inflict further injury on Mr Gaut. Image: Gwent Police/PA
His fingernails were also cut off, and a screwdriver was used to stab his dead body.
A jury found Mr Gaut's neighbour David Osborne, 51, not guilty of murder or manslaughter after he was accused of taking part in the killing.
Mr Harley and Darran Evesham, 47, were found guilty of perverting the course of justice, a charge Mr Osborne had admitted before the trial, after attempting to dispose of evidence of the killing.
A Peugeot car was set on fire hours after the killing, which Mr Evesham later told a BBC reporter contained bloodied sheets from the killing, which he claimed had been committed by "spice addicts".
The blood-stained contents of a Sports Direct bag. Image: Gwent Police/PA
Police later recovered heavily blood-stained clothing from a riverbank close to where Osborne and Evesham were caught on CCTV walking.
Bloodied towels and sheets were found inside a black Sports Direct bag and nearby was a B&M Bargains bag which contained blood-stained underwear, socks, a white t-shirt and grey tracksuit bottoms.
Mr Justlice Lewis remanded the three men in custody ahead of their sentencing on March 25.