A court rendering of the motorcycle rapist based on a victim's description. (Archives)

A man who terrorized women in Nova Scotia in the 1980s is being released from prison on Wednesday, even though authorities have concerns he could offend again.

Known as the motorcycle rapist, John Arthur O'Brien was convicted in 1989 for violent sexual assaults on eight women.

He wore a motorcycle helmet during the series of knife-point attacks.

O’Brien is now in his early 50s and has served two-thirds of his 37-year, nine-month sentence for the sexual assaults. He's reached his statutory release date and cannot be held any longer.

However, the National Parole Board is attaching conditions to his release because in its most recent assessment the board felt O'Brien was at a moderate to high risk of reoffending.


The board noted that even though O'Brien has taken programs in prison, he's reverted to violent behaviour afterward.

"You have the potential to to be very dangerous," read the documents.

The parole board noted O'Brien's "lack of respect towards females."

The documents also show O'Brien was involved in a violent incident in prison and he was transferred to higher security.

The parole board is requiring O'Brien live in a facility designated by Corrections Canada.

He must stay away from all forms of pornography, abstain from alcohol and drugs, report all relationships with women and stay away from his victims, their families and known criminals.

While authorities won't say where O'Brien is likely to end up, Halifax police say they're not putting out a warning.