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A Richmond man who was last seen near the local town landing on the Kennebec River has been reported missing.

Mark Johnston, 64, was planning to move his boat from a mooring in Richmond to the town dock around 6:15 p.m. Thursday, according to a news release from the Maine Marine Patrol. He did not return home and was reported missing as of 9:21 p.m.

Members of the local police department and the U.S. Coast Guard assisted the Maine Marine Patrol, which was leading the search.

Johnston’s boat was found around 10:30 p.m. near the west side of Swan Island. The vessel was running and its navigation lights were on, but no one was on board, the release stated.

Johnston was last seen on security camera footage arriving at the town dock at 6:11 p.m.

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