Britons from Aberdeen to Devon were left baffled last night by a series of mysterious explosions which shook windows and disturbed sleeping children.
Hundreds of Twitter users reported the sounds between around 9pm and 11pm, with many describing the noise as sounding like 'distant fireworks'.
But despite suggestions of RAF jets, meteors and aliens flooding the social media site today, no one has been able to explain what was heard. Even the MoD has said it is stumped.
Now a recording of the 'loud bangs', taken by a woman as she sat at home in Croydon, south London, might shed light on what is really behind the unexplained noise.To read more and listen to the audio, click here.