Twitter users quesioned whether the noise was a sonic boom.
One wrote: “Sonic Boom going off over Norwich a short while ago!”
Another tweeted: “Just outside of Norwich and we heard and felt a boom which made the windows shake #sonicboom.”
A third asked: “Anyone else in the Norwich area just hear a huge bang/boom?”
Another posted: “Was there a sonic boom over Norwich? Huge bang just now.”
A fifth said: “Massive boom felt and heard in Hellesdon, Norwich. Birds flew off in a mad panic. Anyone know what happened?”
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