Michigan is without an operating thoroughbred horse track after Pinnacle Race Course's surrender of its license and simulcast permit.
The Detroit News says the Michigan Gaming Control Board accepted the surrender Wednesday.
In a letter released by the Michigan Horsemen's Benevolent and Protective Association, Gaming Control Board executive director Richard S. Kalm says Pinnacle is suffering from "financial viability issues."
Kalm says the surrender of the license doesn't mean Pinnacle couldn't apply for the 2012 horse racing season.
The track is in Wayne County's Huron Township, near Detroit Metropolitan Airport and about 20 miles southwest of Detroit.
It opened in 2008.
The track's website was disabled Thursday night.