A 22-year-old who cut off his home detention bracelet and took off blamed synthetic cannabis for making him "claustrophobic".
Jack Edward Simpson only lasted three weeks on home detention at his mother's house, after he was convicted for aggravated robbery.
Today he returned to prison after pleaded guilty to breaching home detention.
He told Christchurch District Court Judge Jane Farish today: "I had no intention of breaching my home detention sentence, until I had synthetic cannabis which made me claustrophobic. I can only blame myself for that."
He cut off his ankle bracelet and left the home on February 26 but was quickly located.
He has been remanded in custody ever since.
Judge Farish said it was unrealistic to send him back onto home detention.
"For whatever reason, you are simply not able to cope with the confinement," she said.
Psychoactive substances - either cannabis or synthetic cannabis - did not "sit well" with Simpson and his thinking, and made him do silly things.
He had only recently entered the criminal justice system but already had a list of serious offences.
While in custody, he has had a drug and alcohol assessment which suggested "abstinence from non-prescribed psychoactive substances".
Judge Farish imposed the 22-month jail term with a further six months of special release conditions when he must take treatment and counselling as directed.
- The Press