A town in Bedfordshire has experienced two earthquakes in one day.
It is the third and fourth time people in Leighton Buzzard have felt tremors in the space of two weeks.
The British Geological Survey (BGS) confirmed a 3.0-magnitude earthquake happened just north of the town at about 09:30 BST and a 2.1-magnitude tremor occurred at about 13:40.
People reported their houses “jolting and shaking” when the larger quake struck.
Since 8 September there have been four earthquakes in the town, the BGS confirmed.
A 3.5-magnitude earthquake was felt by residents on that day, followed by a 2.1 magnitude tremor on 13 September.
Glenn Ford, a BGS seismologist, said the latest two tremors were aftershocks from the first incident, but were “earthquakes in their own right”.
Tuesday afternoon’s tremor was “20 times smaller” than the one in the morning, but a few people had reported it to the organisation, he added.
‘A whoosh and a boom’
Matt Stewart, who lives about 1.5 miles (2.4km) from Leighton Buzzard in Eggington, was one of those who felt the larger earthquake, and said the tremors “almost shook me out of bed”.
“It was as big as the first one, I think,” he said. “My wife ran downstairs and said, ‘oh no, not another one’.
“It felt like a whoosh and then a boom coming up through the earth, then it shook the house and a couple of pictures fell off the wall upstairs, like the last time.”