A troubling picture is emerging of a young offender at the third day of his sentence hearing involving the 2010 murder of a 15-year old girl from Delta.
Forensic psychiatrist Doctor Paul Janke told the court the young man, who can't be named, will be a challenge to treat.
He says the young offender showed a clear progression of deviant sexual behaviour leading to the attack and ultimate death of Laura Szendrei.
He says the young man went from pornography depicting fake rapes to three assaults in Burns Bog before attacking Szendrei.
Janke says the young man told him his motivation was to overcome his inability to talk to women by knocking one out to have sex with her.
The sentence hearing will determine if the young man who was 17 at the time of the murder will be sentenced as a youth or an adult.