A Canada-wide warrant has been issued after a high-risk sex offender with a violent criminal history failed to return to his Vancouver halfway house.

Dave Rolland Alexander is currently under long-term supervision after a nine-year sentence for sexual assault causing bodily harm, kidnapping and uttering threats.

A country-wide warrant has been issued for the 41-year-old’s arrest after he failed to show up to his Vancouver halfway house for an 11:00 p.m. imposed curfew Wednesday, according to Const. Brian Montague.

Police said he has a “lengthy and violent” criminal history and is considered a high risk to reoffend sexually.

He is described as six feet tall, 195 pounds with a fair complexion and blue eyes. He wears glasses and has a shaved head, according to police.

Anybody who sees or Alexander or knows where he is warned not to approach him and call 911 immediately.