A NSW man sentenced to 10 years in jail earlier this year for "grave and evil" acts of child sexual abuse and bestiality has killed himself in Lithgow Prison.
Allan Kenneth Brookes, 56, was found dead in his cell at the Lithgow Correctional Centre about 8:30am on Saturday.
Brookes took his own life three weeks after NSW detectives charged him with 20 additional historic child sexual assaults.
A spokeswoman for Corrective Services NSW confirmed the death in a statement.
"Corrective Services NSW treats every death in custody very seriously," the spokeswoman said.
"This death is not believed to be suspicious."
Abuse occurred on dairy farm
Brookes was sentenced to 10 years and six months in prison in April on charges of repeatedly sexually abusing a boy on a NSW dairy farm.
The court heard Brookes subjected his victim to "persistent and degrading abuse" that started when the boy was just 13.
Brookes repeatedly touched the boy on the genitals and insisted on showering with him.
On one occasion, he incited the boy to perform a sexual act on a cow and performed his own acts of bestiality on animals in the boy's presence.
Later, the court heard Brookes committed an act of aggravated sexual intercourse on the boy and tried to shame him into keeping quiet.
'Ruthless manipulation' of boy
In sentencing, Judge Chris Craigie said Brookes had engaged in "ruthless manipulation" in an attempt to keep his "grave and evil" crimes a secret.
After being jailed, Brookes was facing a further 20 historical child sexual assault charges.
Detectives alleged Brookes sexually and indecently assaulted a teenage boy on a property at Gunnedah between 1983 and 1986.
Brookes was due to face Tamworth Local Court on the new charges on August 28.
His death is being investigated by Corrective Services NSW and NSW Police.
A report will be prepared for the state coroner.
