Nathan Baggaley, who gained two silver medals on the 2004 Summer Games in Athens, and his brother had pleaded not guilty.
But a Brisbane jury found each males guilty following a two-week trial, Nine News studies.
CNN has reached out to the crown prosecutor Ben Power and representatives to the brothers for remark.
Dru Baggaley and one other man had been arrested in the summer time of 2018 after regulation enforcement intercepted their boat, in line with Nine News.
Authorities seized greater than 500 kilograms of cocaine, in line with court docket paperwork.
Court paperwork element the prosecution’s proof linking Nathan Baggaley to the case, noting that his fingerprint was found on a bit of tape used to cowl the boat’s registration plate.
He additionally tried to contact his brother Dru whereas he was at sea, in line with court docket paperwork.
The boat had met a bigger overseas vessel off the coast of New South Wales and was subsequently intercepted, in line with the prosecution’s case as outlined in court docket paperwork.
The brothers have been convicted and served time in reference to medication costs in the previous, in line with court docket paperwork and native media studies.
They will now stay in custody till sentencing and probably face life imprisonment, per Nine News.