EXETER, R.I. (WPRI) — The Rhode Island State Fire Marshal’s Office says a campsite is the possible starting point of a brush fire that burned more than 700 acres of land in Exeter.

Investigators reported there was evidence of a campsite at the Queen River Nature Preserve and “several items were recovered from the area.”

The fire, which broke out Friday afternoon, was 90% contained as of Saturday morning, according to West Greenwich Director of Emergency Management Brooke Lawrence.

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“Today’s operation was to get any hot spots, to keep the fire contained. We have a lot of crews working in the area,” Lawrence said. “We ask that residents stay out of the area so we can work safely.”

Anyone with information about the fire is urged to contact the Office of the State Fire Marshal tip line at (401) 383-7723.