HONOLULU (AP) — A former world kickboxing champion has been sentenced to 15 years in prison for tax fraud and other charges. A federal judge in Hawaii sentenced 58-year-old Dennis Alexio Thursday. A federal jury in January 2016 found him guilty of 28 counts of defrauding the U.S. Internal Revenue Service of more than $700,000 in illegally obtained tax refunds.Read more on NewsOK.com