The 35-year-old Mae, racing under the name Vanessa Vanakorn, came last in the Olympic giant slalom on February 18 but made headlines as Thailand's first ever female skier at Olympic Games and lent an added dose of glamour to the sports event.
In a report late Thursday, the ski association (SZS) said it had found evidence that races held in Slovenia earlier this year had been fixed to make sure Vanakorn could travel to Sochi.
The fixing was done at the request of Thai officials, the SZS added.
The four suspects in the scam, who face suspensions of up to four years, included Vlado Makuc, head of alpine skiing at the SZS, the federation also said.
The report, which documents irregularities ranging from falsified starting lists and rankings to even race dates, will now be forwarded to the police and to the International Ski Federation (FIS), SZS president Jurij Zurej added.