Suffolk Police have confirmed that a loud bang heard over the county on Wednesday morning was a sonic boom.
Officers were inundated with 999 calls from members of the public following the incident which happened just after 8.30am.
People on social media reported that their houses had been shook by the force of the bang, while animals were distressed.
Police believe the boom was caused by "military aircraft."
We can now confirm that the loud bangs heard across #Suffolk this morning was a sonic boom produced by military aircraft.
More top news
Cliff-top homes are starting to crumble on the Norfolk coast as fears grow that high tide will sweep them into the sea.
A fine evening, with clear spells leading to an early freeze.
A pedestrian has been hit by a vehicle near the Norfolk and Norwich Hospital.