A massive fire broke out on Harsens Island Wednesday afternoon, destroying several historic homes.

Authorities are investigating what sparked a blaze Wednesday on Harsens Island on Lake St. Clair that has destroyed at least six homes at the historic resort and yacht club Old Club.

Six homes in the 9900 block of South Channel Drive were destroyed, while two other homes had extensive damage. The homes are primarily vacation residences used in the summer. No one was residing there, the Old Club general manager said Wednesday.

No injuries were reported and no estimate of damages had been determined yet, according to authorities.

Harsens Island is located on Lake St. Clair near Algonac and the Canadian border, near the mouth of the St. Clair River.

Calls about the fire came into 911 just before 1 p.m. Wednesday, according to St. Clair County’s emergency management division.

The history of the Old Club dates back 150 years to 1872, when a group of sportsmen met at a downtown Detroit bookstore to organize the St. Clair Fishing and Shooting Club of Detroit.

Harsens Island has about 1,000 or more residents and is located about 54 miles northeast of Detroit. It can only be accessed by boat and the Champion Auto Ferry.