WINNIPEG, Man. — The Manitoba Integrated High Risk Sex Offender Unit (MIHRSOU) is a joint forces unit of the Winnipeg Police Service and the RCMP. MIHRSOU today provides information regarding MARINUS WILLEMSE, 59 years of age, a convicted sex offender who is considered a high risk to re-offend in a sexual/sexually violent manner against adult females, and both male and female children.
On November 12, 2026, WILLEMSE was released from Milner Ridge Correctional Centre in Manitoba after serving his sentence of 8 months (includes 26 days pre-sentence custody) for a conviction of Breach of Recognizance.
WILLEMSE is expected to be take up residence in Winnipeg, Manitoba.
WILLEMSE has served three federal penitentiary sentences. He has been arrested within approximately one month after every release.
After serving a global 20-year sentence for abduction of person under 14 years of age, use firearm during commission of an offence, forcible confinement (2 counts), assault with weapon, disguise with intent, assault with intent to steal, utter threats, and breach of recognizance (2 counts), he was released in 2022. Within one month, WILLEMSE was arrested for uttering threats and possession of weapons. He remained in custody serving sentences for uttering threats (3 counts), possession of weapons, and breaches of court orders (2 counts). In February of 2026 he was released but was taken back into custody on March 16th, 2026, until his release on May 28, 2026. WILLEMSE was arrested on June 8th, 2026, and has remained in custody until his release on November 12, 2026.
Upon release, WILLEMSE will be subject to a lifetime order which prohibits him from:
- Attending public parks, public swimming areas where persons under the age of 14 years are present or can reasonably be expected to be present; or a day care centre, schoolground, playground or community centre;
- Seeking, obtaining or continuing any employment, or being a volunteer, that involves being in a position of trust or authority towards persons under 14 years of age;
WILLEMSE has a history of violent and sexual offences. Although he participated in some treatment programming in the past, WILLEMSE is still considered high risk to re-offend in a sexual and/or sexually violent manner. Female adults and all children, both male and female, are at risk.
This information is provided to enable members of the public to take suitable measures to protect themselves. Any form of vigilante activity or other unreasonable conduct directed at Mr. WILLEMSE will not be tolerated.
