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A 30-year-old has blamed party pills for an all-night sex attack on a younger man.
Johnathan Andrew Smallbon told police: "I have been trying to control my urges but after I took three BZPs I was unable to control myself."
BZPs are benzyl piperazine pills, a popular type of party pill said to induce feelings of euphoria, energy and heightened senses. A government study has also shown they can cause hallucinations.
Smallbon, who is unemployed, has serious previous convictions and no sentencing date has been set after his five guilty pleas in Christchurch District Court today.
Instead, a psychiatric report has been ordered and he has been remanded to January 31 so that the Crown can consider seeking to have the case sentenced in the High Court where an open-ended term of preventive detention can be considered.
He has been in custody since his arrest two weeks ago, and Judge Robert Wolff ordered that he remain in custody pending sentencing on charges of kidnapping for sex, threatening to kill, assaulting while armed with a knife, and two counts of sexually violating the 24-year-old victim.
Police prosecutor Sergeant Mark Berryman said the victim had suffered "huge emotional harm" as a result of the attack on the night of December 30 to 31.
He told how Smallbon asked the victim to help move a fridge but once he was in his home, Smallbon placed him in a stranglehold with a knife against his throat. He demanded money.
He then made the victim lie face down on his bed with the knife to his face.
"Don't say anything, because this is your life," Smallbon told him. He tied his hands behind him with telephone cord and took off his shoes and jeans, and cut off his underwear using the knife.
He then used one of the victim's socks as a gag, before violating him at intervals through the night.
In the morning he knelt astride the victim's back, put his arm around his throat and cut off his oxygen, telling him: "Don't tell anyone or this will happen to you."
The victim could not breathe and began gasping and going into spasm.
Later in the morning he tormented the victim with the knife, using a stabbing motion or waving it over the victim's body.
Before lunch Smallbon untied him, allowed him to get dressed, and tried to befriend him.
"The defendant cried and apologised for what he had done. He blamed party pills," said Mr Berryman.
When interviewed, Smallbon admitted detaining, violating and assaulting the victim.
The victim was left with bruising and burst blood vessels in his eyes as a result of the prolonged attack.
- NZPA