Manitoba police are asking for help to find a long-term sex offender who could be in Winnipeg or the Fisher Branch and Fisher River area of the province.

Christopher Edwin Murdock was designated as a long-term offender in 2002 after numerous sexual assault convictions. The designation is given to people who are convicted of a serious personal injury offence and who are considered likely to re-offend.

On Tuesday, Murdock failed to report to his parole officer as required by his long-term supervision order.

Correctional Service Canada issued a nationwide warrant for Murdock for being "unlawfully at large," police said in a news release on Tuesday.

The 49-year-old's criminal record also includes weapons and violent offenses, police said, adding he has "a long history of alcohol and substance abuse."

Last seen in Winnipeg

Murdock was most recently seen in the Winnipeg area, but police say he could also be near Fisher Branch or Fisher River, Man., about 140 kilometres north of the city.

The Manitoba Integrated High Risk Sex Offender Unit, which consists of RCMP and Winnipeg Police Service members, is asking for public help to find Murdock.

He's described as six feet tall, around 150 pounds with black and gray hair and brown eyes.

If you have any information regarding his whereabouts, police ask that you contact the Manitoba Integrated High Risk Sex Offender Unit at 204-984-1888.

After normal business hours, call the appropriate RCMP detachment or the Winnipeg Police Service at 204-986-6222.

You can also contact Crime Stoppers at 204-786-8477 or toll-free at 1-800-222-8477.