Former Australian horse trainer John Nikolic has been found guilty of importing drugs including cocaine and possessing a weapon in Fiji.

Key points: A Fijian court finds John Nikolic guilty of importing drugs and possessing a firearm

A Fijian court finds John Nikolic guilty of importing drugs and possessing a firearm Nikolic stood in the dock but did not react as the verdict was delivered

Nikolic stood in the dock but did not react as the verdict was delivered He will be sentenced on March 8

He will be sentenced on March 8 His wife Yvette was found not guilty last week

The judge — Justice Daniel Goundar — delivered his guilty verdict in Suva this afternoon backing a decision delivered earlier today by three assessors, whose role is similar to jurors in the Australian system.

The ruling comes after the former Melbourne resident pleaded not guilty to five charges — two related to the importation and possession of drugs, as well as one related to the possession of firearms without a licence — when the trial started in late January.

Two other less serious charges related to the drugs were dropped during the trial.

Nikolic stood in the dock but did not react as Justice Goundar delivered his guilty verdict.

John's wife Yvette was found not guilty of the charges against her last week. ( Facebook )

Nikolic was arrested with his wife Yvette Nikolic by Fijian border police at Port Denarau in June 2018.

The Nikolics began a voyage on their yacht Shenanigans in the US in February 2018 with stops in Colombia and Panama before they were arrested.

Customs officials alleged they found 13 bars of cocaine, 65 tablets of illicit drugs, two handguns and 112 rounds of ammunition on the yacht.

Most of the drugs were found in a blue bag, stored in a locker below deck. About $US15,000 in cash was also allegedly found on the vessel.

In court today, Justice Goundar said Nikolic was aware of the packages of cocaine on the vessel.

"Following the discovery of the first package containing 10 bars, I accept that the accused uttered words to the effect 'I know what you are looking for, there is another three bars hidden on the opposite side of the same hatch behind the water tanks'," he told the court.

The prosecution said Nikolic, along with his wife, had sailed the luxury vessel from Florida to Colombia before passing through the Panama Canal while "visiting several beautiful islands" on the way to Fiji.

Nikolic will be sentenced on March 8.

Yvette Nikolic found not guilty on all charges

Yvette Nikolic's lawyer (left) said his client had claimed all along that she was innocent. ( ABC News: Lice Movono )

The guilty ruling on Nikolic came after the court found his wife not guilty on all five charges.

Mrs Nikolic had faced the same charges as her husband, and had been detained for the same period of time since their arrest in June last year.

Justice Goundar last week ruled in favour of a no case to answer application submitted by Mrs Nikolic's lawyer, which sought to have her acquitted without presenting a defence.

The judge said there was no evidence to prove that Mrs Nikolic was complicit in the possession or importation of illicit drugs, or the possession of weapons.

Her lawyer, Ronald Gordon, said his client had said all along that she was innocent and that the judgment was a "just result".

"There was no evidence at all against her on any of the charges, so we are thankful to the Fijian justice system, and we have been vindicated."