A murderer has been found guilty of sexually assaulting a female officer while he was being searched at Wakefield Prison.
Adam Bowler, 30, carried out the attack at the Love Lane jail while serving a life sentence for murdering a prostitute and burning her body.
He denied it but a jury at Leeds Crown Court found Bowler guilty of the sex offence, which took place in June last year.
The trial, held this week, heard how Bowler approached the officer from behind shortly after she had searched him. He then grabbed her before the officer screamed for help.
Bowler tried to run away but was detained.
He was interviewed but denied doing anything wrong. He claimed he had brushed against the officer by accident.
Judge Geoffrey Marson QC gave Bowler a 12-month sentence for the offence, to run concurrently with his life sentence for murder.
He said: “This was a shocking and serious incident upon a prison officer who was performing a public duty and those like you who are in prison have to understand that consequences will follow for this sort of gross invasion of privacy. Such assaults will not be tolerated.
“This conviction will be taken into account by the Parole Board when they decide if it is safe to release you.”
Bowler was given a life sentence in March 2004 and told he must serve a minimum of 20 years for the murder of Lisa Marie Spence. Bowler was obsessed with serial killer Peter Sutcliffe and kept files on him and various other murderers.
Bowler was 18 when he teamed up with a registered sex offender. They lured Ms Spence back to a flat in east London and she met her death.