Residents in Swansea's Townhill and Mayhill areas have reported a persistent siren-like noise that is disrupting their sleep, prompting an investigation by the local council.
Swansea Council stated that it was alerted to the issue by the South Wales Evening Post, after readers complained about the mysterious sound.
A council spokesman confirmed that a potential source of the noise has been identified, though further details were not provided.
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Members of the public are being urged to contact the council's noise pollution team with any additional information that could help resolve the matter.
