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The bomb disposal unit was called when police found unidentified materials after making an arrest in Margate yesterday.
Officers searched an address in Sandhurst Place, Margate at 5.20pm after arresting two men at 11am on suspicion of burglary at a business in Northdown Road, Broadstairs in January.
While searching the property unidentified materials were found by officers and the Explosive Ordnance Disposal unit was called to assess the items, which have since been taken away.
Kent Fire and Rescue Service was also in attendance.
Nearby properties were also evacuated evacuated until around 11.30pm when residents were able to return to their homes.
One of the men arrested, aged 33 and from Margate, has been released on bail until September 14.
Officers continue to carry out enquiries at the scene whilst the second Margate man, aged 25, remains in police custody.