The lead investigator in the Roscommon 'House of Horrors' scandal fears the man involved will reoffend after just being released from prison.
In 2010, he was found guilty of 47 counts of rape and sexual assault against his son when the boy was between 12 and 15 years old.
He denied the offences, but was convicted and sentenced to 11 years in jail, while his wife was also put behind bars after pleading guilty to ten charges, including forcing her son to have sex with her.
The court also heard their six children were grossly neglected in their Roscommon home.
The father was released from prison two weeks ago after serving eight years, and retired sergeant John Hynes, who led the investigation, fears he could re-offend.