Calgary Police are warning women about another dangerous offender who is being released into the Calgary area.

35-year old Michael Andrew Scott just served a 12-and-a-half year sentence in federal prison for three counts of sexual assault, two counts of robbery and two counts of uttering threats to cause death or harm.

Scott has a criminal history of sexual assault, robbery and threats against adult women.

Officers say Scott targets random women in parkades and other secluded areas.

Scott is described as Caucasian, 5'9" (175 cm) tall, 155 lbs. (70 kg), with brown hair and green eyes.

He has a three-inch scar on his right hand.

Scott has an 11 p.m. curfew.

Another dangerous offender was released into Calgary on Sunday.

45-year old Gregory Venn is a serial rapist who has been labeled a psychopath.

He was released from prison after serving eight years behind bars.

Venn has a long history of violent sexual assaults.

Twice Venn broke into Calgary homes and sexually assaulted women.

Psychiatrists say Venn is a psychopath and in 2000 he was labeled as a dangerous offender and ordered locked up indefinitely.

But that was overturned on appeal.

Now Venn is free.

He has served his full sentence, but police fear he will strike again.

At the end of July, 28-year old Jack Samuel Froese, a violent serial rapist, was released from prison into Calgary.

Police issued a warning about him as well because they believe he's at a high risk to re-offend.

Police say they are currently monitoring six high-risk offenders in the city.