However, Radio Kiribati reported two others had been sentenced by Italy's Court of Appeal to six and 15 years imprisonment respectively.
The eight men were arrested in October 2016 after they allegedly threw hundreds of kilograms of cocaine overboard.
Italian authorities found 385 kilogrammes of cocaine floating in 17 waterproof bags 25 kilometres from the southern port of Gioia Tauro.
The six were acquitted earlier this month and the Kiribati government paid for their repatriation.
