A 24-year-old convicted burglar has absconded from prison in Doncaster, police said.
Damian Pearson fled from HMP Hatfield in Doncaster at around 7am, South Yorkshire Police said.
Appeal to locate 24yo Damian Pearson who absconded from HMP Hatfield this morning (29/6/14) - call 101 with info http://t.co/W1zKXHKFtJ
Mr Pearson was sentenced to three-and-a-half years in prison for burglary in 2013. He is white, 6ft 1ins tall, of slim build and has links to Doncaster, in particular the Wheatley Park area.
Police has advised members of the public not to approach him.
The child sex abuse crimes committed by HIV-positive Anthony Marsh's crimes were "especially deplorable," said Detective Inspector Delphine Waring of South Yorkshire Police.
"Knowing he had HIV, he chose to engage in sexual conduct with teenage boys and, in so doing, demonstrated a complete disregard for their wellbeing and future health," she said after Marsh and his accomplice were handed life sentences today.
"But, for Marsh and Davis's victims and their own families, today's sentencing will not be the end of the story," Ms Waring added. "The damage these two men have inflicted will last for many years to come."
The detective said it was possible more victims had not yet identified themselves and urged any people in that position to come forward for help.
Speaking after the sentencing of "predatory" paedophile Anthony Marsh and accomplice Lee Davis, South Yorkshire Police described the men's offences as "the most shocking series of sexual crimes committed against young boys" that the force has investigated.
The pair were said by police to have targeted boys across the country.
Marsh and Davis indulged their own depraved and criminal desires for many years against a number of young, impressionable and vulnerable young boys the length and breadth of the country.
The extent of their offending was matched only by the duplicity of their behaviour, which included their use of pseudonyms and multiple mobile phones to disguise their true identities and the deceit they exhibited day after day to their own families.
HIV-positive paedophile Anthony Marsh and his accomplice Lee Davis are both married with children and managed to hide their crimes from their families for more than a decade.
The men, from near Doncaster, South Yorkshire, used social networks such as Facebook and Bebo, as well as specialist gay websites, to groom teenagers as young as 13, before meeting their victims to sexually abuse them.
Police found a library of films hidden in the cellar of Davis's home showing him abusing the boys.
Officers also established that Marsh distributed some of the footage over the web.
An HIV positive paedophile who groomed teenage boys on the internet and filmed himself having sex with his victims has been jailed for life today.
Anthony Marsh, 53, a salesman from near Doncaster, South Yorkshire, was told he must serve at least 10 years before he is considered for release.
He was jailed at Sheffield Crown Court along with unemployed accomplice Lee Davis, 39, who was also given a life term and told he must serve at least 12-and-a-half years in prison.
Judge Julian Goose QC told Marsh and Davis they were "predatory, dangerous paedophiles". Police have described their activities as "vile, horrendous offences".
Lorna Vickerage's mother said she is "so happy" her daughter is safe and well after the missing teen was found in London.
Christine Vickerage wrote on Facebook, "My gawgess Lorna has just been found I am so happy".
Police will continue to question John Bush, 35, who was arrested yesterday at Euston station when he was found with the missing 14 year old after being on the run for five days.
Detective Chief Inspector Craig Robinson, of South Yorkshire Police, has told the media he hopes that 14-year-old Lorna Vickerage will be returning to Doncaster late tonight or tomorrow after she was found in London this afternoon.
Det Chief Insp Robinson clarified the 14-year-old had been found by plain clothes officers at Euston train station following a "fast-moving" investigation.
The force were alerted the pair were in London when they attempted to check into two hotels in the city.
John Bush, 35, is being held at a London police station after being arrested on suspicion of child abduction.
Detective Chief Inspector Craig Robinson, of South Yorkshire Police, has confirmed that missing teen Lorna Vickerage has been found in London and John Bush has been arrested on suspicion of child abduction.
DCI Robinson said officers had followed a trail from Watford to London today, adding that both Lorna and Bush are "safe and well" and Lorna's family had been informed.
South Yorkshire Police are to hold a press conference at 4pm after a missing 14-year-old Lorna Vickerage was found at Euston train station in London.
John Bush, 35, has been arrested on suspicion of child abduction.