Possible shark sightings were reported off Crescent Beach State Park in Cape Elizabeth on Thursday and Friday, authorities said.

A commercial fisherman reported seeing a shark Thursday by the breakwater near Richmond Island, said Daryen Granata, harbormaster for Cape Elizabeth and Scarborough.

On Friday morning, two paddleboarders reported seeing a shark near the mooring field in Seal Cove, said park manager Kurt Shoener.

“Following protocol, Crescent Beach lifeguards cleared the swim area for one hour after the reported sighting,” Shoener said in a statement.

Authorities didn’t specify what type of sharks were reported. No sharks were spotted in subsequent helicopter searches of the area, Granata said.

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