HOPKINTON (CBS) – A boater in Hopkinton forgot to do one very important thing on Thursday.

Hopkinton police posted a photo of a submerged pickup truck in the Whitehall Reservoir with the caption “Always set your emergency brake.”

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There were no injuries reported in the incident. Crews were working to get the boat out of the water on Thursday afternoon.

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In a similar mishap in Quincy earlier in the day, an unoccupied vehicle rolled down a driveway and into Quincy Bay. No one was hurt there, either.