CLEVELAND (AP) — A man who authorities say sold a deadly mixture of drugs to the son of a Greek billionaire in Cleveland has been indicted in federal court.

Cleveland.com reports 35-year-old Terry Lee Christian is charged with selling 34-year-old Sokratis S. Kokkalis a mix of heroin, cocaine and fentanyl outside JACK Cleveland Casino in July. Kokkalis was found dead in a downtown hotel room from a fatal overdose.

Kokkalis was in Cleveland for a gambling conference. The criminal complaint says surveillance footage shows Christian selling drugs to Kokkalis.

Kokkalis’ father, Socrates P. Kokkalis, is the founder of a Greek telecommunications company and chairman of the Greek soccer team, Olympiacos F.C. His son was the team’s vice president.

A message seeking comment was left with Christian’s public defender Wednesday.