A Victorian man has been jailed after impregnating a 15-year-old girl and later holding a knife to a woman before police intervened.
The 21-year-old man, who cannot be named to protect his victim's identity, began a relationship with the girl when she was just 14. She became pregnant at age 15.
When the man later learned police were conducting a welfare check on the girl, who was from a broken home and staying with a woman, he lashed out.
He called the woman a "f***ing dog" and pulled a knife on her when she asked him to leave the house in December 2019.
He was jailed in Victoria's County Court on Friday for 18 months after pleading guilty to the sexual penetration of a child under the age of 16.
He also admitted to common law assault and threatening to inflict serious injury against the woman he pulled a knife on.
Afterwards, he left with the girl and was arrested the following day at a regional train station.
The man, who was immature for his age because of his high-functioning autism and ADHD, had been told the relationship was inappropriate by his mother and the girl's mother.
Judge Fran Dalziel said the relationship could not be described as an exploitative one because of the man's mental immaturity.
But the judge also said the girl was unable to consent due to her age. Her pregnancy was terminated.
The man had previously been warned by a sexual crimes detective over an earlier inappropriate relationship with another underage girl.
After being released from jail, he must complete an 18-month community correction order.
His sentence includes the time he's spent in custody since his arrest.