TOLEDO, Ohio (AP) - Authorities investigating a large-scale fake ID operation in Ohio say they've seized $4.7 million in bitcoin and several computers and printers.

Court documents say they also found gold and silver bars and coins inside the home of 34-year-old Mark Simon. Records show the Toledo man was charged Thursday in U.S. District Court with making and transferring false identification documents.

A message was left with Simon's court-appointed attorney.

Ohio authorities began investigating in 2015 after receiving several fake ID cards from a bar in Springfield.

An affidavit in federal court says a college student told investigators his friends bought IDs from the online social forum Reddit.

Documents say buyers had to follow specific instructions to hide the transactions and use bitcoins, digital money that isn't tied to a bank or government.