Alexander 'Sandy' Tamati, 60, was found guilty of a raft of charges in Napier District Court on Wednesday.

A Hawke's Bay Mongrel Mob leader has been found guilty of kidnap and sexually violating a teenager because she failed to pay a drug debt.

Alexander 'Sandy' Tamati, 60, Hagen Henare, 28, and Neil Benson, 28, were on trial in the Napier District Court this week facing a raft of charges for offending late last year.

Henare and Benson each pleaded guilty to two charges of kidnap on the second day of the trial, and the Crown agreed not to proceed on the other charges to which they were a party.

STUFF The three men stood trial at Napier District Court.

Tamati pleaded guilty to a charge of supplying methamphetamine to the woman at the start of the trial, but defended four charges of unlawful sexual connection, two of kidnap, aggravated assault, assault on a female, assault with a blunt instrument and threatening to kill or do grievous bodily harm.

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* Woman kidnapped and sexually assaulted over unpaid drug debt says Crown

The jury retired on Wednesday afternoon and took just one and a half hours to return guilty verdicts on all charges against Tamati.

The men will be sentenced next month.

Crown prosecutor Steve Manning opened the case on Monday by telling jurors it involved a 19-year-old woman who had purchased about $800 worth of the drug from Tamati and was unable to pay him.

Manning said Tamati enlisted the services of Mongrel Mob members Henare and Benson in the early hours of November 26, 2016. They drove to the victim's house, woke her up and made her get in a car.

"They drove her to the house that Mr Tamati was then occupying, and essentially handed her over to him, one of them with the words 'parcel delivered'," Manning said.

While held against her will in the sitting room of the house Tamati assaulted and sexually violated her.

Manning said the woman knew the men and "this is not a case of a stranger saying 'these things happened to me by three men I didn't know'".

Manning said Tamati was also known as 'Waldo' and 'Cap', short for captain. He was a senior member of the Mongrel Mob and a former president of the gang's Aotearoa chapter.

The victim would be the first witness to provide evidence, and would tell the court she knew she owed Tamati money and was scared and had been hiding from him, Manning said.

He said Tamati contacted the woman via Facebook about the debt and told her to come to his place and "work it off".

The woman interpreted this statement as having a sexual overtone and told him "I don't do things that way".

It was after this exchange that Henare and Benson arrived at her house to take her to Tamati.

The woman described to the court a series of incidents in which Tamati assaulted her, threatened her, and sexually violated her. Benson and Henare waited outside the room. At one point Tamati fell asleep and the woman tried to leave, but the other two would not let her.

She was eventually allowed to leave after promising she would return later that night. She went to her mother, who took her to police to report the alleged offending.

She said she knew all of the men and Benson, or 'Heils' as he is known, "was like a brother to me".

"There wasn't anything I wouldn't do for him," she said through tears.