DETROIT — Online retail mortgage lender Quicken Loans asked a super PAC that supports Detroit mayoral candidate Mike Duggan to give back an $80,000 political donation after a complaint to the Michigan Gaming Control Board.

The Detroit Free Press reports the complaint by former Detroit mayoral candidate Tom Barrow says Dan Gilbert, founder of Quicken Loans and owner of Greektown Casino-Hotel, broke a law that prohibits casino owners and operators from contributing money in state or local political races in Michigan.

Quicken Loans' lawyer Richard Chyette said in a statement Tuesday that the company immediately asked the super PAC for a full refund once the Control Board's senior staff requested it withdraw the political donation.

The board says it initially had advised Quicken representatives that such a donation may be allowed.