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Immigration officers are carrying out a pre-planned warrant at a car wash.
Officers from the police and other partner organisations including Home Office Immigration Enforcement were seen at the Bubbles car wash in Green Street Green Road, Dartford.
At least two vans were joined by a further two cars at the incident.
Spokesman for the police Steve Knight said: "No criminal offences have been reported and no arrests have been made but inquiries at the address are ongoing."
One witness said: "I saw the two big police vans at the car wash followed by a couple of cars.
"They seem to be talking to some people there."