A swimmer believed to be in difficulty at sea in north Lowestoft sparked a lifeboat and coastguard call-out.
But after subsequent investigations it proved to be 'a false alarm with good intent.'
A spokesman for HM Coastguard Lowestoft & Southwold said the team was alerted just after noon on Sunday, November 25 to 'reports of a swimmer possibly in difficulty just off the groynes at North Denes.'
The RNLI Lowestoft lifeboat was launched but 'investigations proved a false alarm with good intent,' according to the coastguard rescue officers who were subsequently stood down.
An RNLI lifeboat spokesman said: 'The lifeboat had just returned from a morning training exercise when we were alerted to reports of a swimmer in potential difficulty.'
But after searching the area, it turned out to be a false alarm 'caused by a floating marker buoy' in the sea.
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