Chief Anthony Fabrizi of the Milford Fire Department said that crews responded yet again on Sunday morning to the state park for another active fire.
According to Chief Fabrizi, two 40-foot construction containers had active fires within them.
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Crews responded to the park around 7:20 a.m. and quickly extinguished the fires.
The containers are used to house equipment for the park.
Investigators said they found evidence of vandalism at the scene.
No one was hurt during the incident.
It is not known whether or not these fires have anything to do with the fire at Silver Sands Thursday that destroyed three buildings. The Chief had said, however, that the location of the second fire was close to the first fire.
The investigation is ongoing and a reward of $2,500 is being offered.
Anyone with information is asked to contact officials at 860-424-3333 or the Connecticut Arson Hotline at 1-800-84-ARSON.