MANISTIQUE - State Police say a 57-year-old suburban Detroit man has been killed in an off-road vehicle crash in Schoolcraft County.
Troopers say the crash happened about 7 p.m. Wednesday in Mueller Township about 10 miles east of Manistique.
State police say Brian R. Reiss of Macomb County's Clinton Township was operating the off-road vehicle. He died Friday at Marquette General Hospital.
Investigators say they believe that drinking and speed are factors in the crash.