GREEN BAY, Wis. (From news reports) - A De Pere man convicted of federal fraud in 2018 has written a letter to a federal court in Green Bay asking for relief.

Ron Van Den Heuvel, now in his early 70s and living in Georgia, sent the letter to the court late last month.

In it, he asked the judge to address the legality of a 2015 search, claims of withheld evidence, and alleged conflicts of interest involving prosecutors.

Background on the case

Van Den Heuvel pleaded guilty in 2018 to one charge in a 14-count indictment as part of a plea agreement.

Authorities said he defrauded investors of more than $9 million, including more than $1 million from the Wisconsin Economic Development Corporation.

Van Den Heuvel told investors he planned to start an eco-friendly business called Green Box, which he said would turn solid waste into energy.

He was initially sentenced to seven and a half years in federal prison.