People in South West England have been left baffled by a loud bang which could be heard for miles. Listen here:
Social media has been awash with reports of the boom, with the cause yet to be identified.
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People in Devon, Dorset and Somerset have reported hearing the noise, with some saying it caused their windows to shake.
A Ministry of Defence spokeswoman told The Mirror that the bang is not believed to be linked to any RAF activity.
Meanwhile, Dorset resident Julian Thomas told the publication it sounded like two separate booms.
He said: "My wife and I both heard the boom earlier this afternoon at our home just north of Bridport, Dorset.
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"My impression is that there were two distinct booms, separated by maybe a second, and one was longer than the other, but I can't recall which.
"There was some duller muffled deep sound afterwards for maybe two or three seconds which I took to be the sound of a jet engine going hard, as if a fighter aircraft were pulling up after a dive which had gone supersonic."
He continued: "My impression was that a jet fighter at very high altitude had caused the booms, but whether the sound would have extended as far geographically as has been described, I have no way of knowing.
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"Hope the explanation will emerge from someone who knows the facts."
People have been sharing their own theories on social media - though the majority of people just seem generally baffled.
Hopefully we'll get answers soon.
