The man who led the police inquiry into Stewart Murray Wilson is warning it is possible the sex criminal could offend again, despite strict conditions for his release from prison.
Wilson, 65, was jailed in 1996 for multiple rapes, assault, bestiality, drugging and the ill-treatment of children over a quarter-century.
He is still considered a high risk but by law, must be released.
Seventeen conditions on his release allow satellite tracking and force him to live on the Whanganui prison grounds, just outside the fence.
He is forbidden from contacting any children and women, as well as his victims.
Retired detective Colin McKay believes there is a high probability Wilson could reoffend, and the public must face that.
He hopes the strict release conditions make people feel reasonably safe.