MIAMI (AP) — A federal judge has ordered a South Florida man held until arraignment Friday for allegedly conspiring to launder millions of Medicare fraud dollars, which authorities say eventually wound up in Cuba.

Prosecutors said in a motion filed Monday in federal court in Miami that 46-year-old Oscar Sanchez provided cash to the masterminds behind the fraud for a fee. They also alleged that Sanchez conspired to send money from Medicare fraud first to shell companies in Canada before it was passed through a Trinidad bank and eventually on to Cuba.

Attorney Peter Raben said his client, a U.S. citizen and native of Cuba, was in federal custody awaiting arraignment.

If convicted, Sanchez could face 13 years in prison.

The case is part of a wider health care fraud investigation.