Large numbers of police remain at the scene of an "ongoing incident" in Ipswich's Downside Close.
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At least five police cars have been seen blocking the entrance to the cul-de-sac in the Stoke Park area of the town this evening.
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A Suffolk police spokesman confirmed they were called to an incident in the area but was unable to provide any further details.
He said however the incident remains ongoing.
"There is no reason for the public to be concerned," he added.
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