Three people were arrested during the early hours in a Norwich suburb as part of an ongoing police investigation.
Officers were called around 2.50am on Tuesday to an address on Hemlin Close in Earlham.
The incident saw police swoop on a home in the close and arrest three people and subsequent visits made throughout the day.
A spokeswoman for Norfolk Police said: "The arrests relate to an ongoing police investigation and therefore it would not be appropriate to comment any further at this time."
Eyewitnesses saw a police van at the address during the day following the arrests.
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