Summit Township Fire Capt. Scott Thornton was pronounced dead at Foote Hospital, the Jackson County sheriff's department said.
Firefighters responded to the fire shortly after 7 a.m. Thornton, a 19-year veteran, was found in a second-story bedroom above the garage.
The cause of the fire was being investigated.
Thornton joined the Summit Township fire department in 1986 and was promoted to captain in 1997. He was the third generation in his family to be a firefighter.
The home's occupants were OK. A man got out safely and his wife already had left to exercise, The Jackson Citizen Patriot reported.
The brick house was destroyed.
Summit Township is located about 40 miles south of Lansing and about 80 miles west of Detroit.
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