The state fire marshal is responding to Club Getaway in Kent to investigate a suspicious fire.
The fire caused heavy damage to two cabins and guests in those cabins were evacuated.
Several fire departments responded and ambulances were sent, according to Litchfield County dispatchers.
Guests were evaluated at the scene and released, according to a news release from Club Getaway, a 300-acre lakefront property at 59 South Kent Road.
The club specializes in camps and sports and adventure programs.