Council offices in Newark were evacuated after a worker discovered an 'unknown substance'.

Newark and Sherwood District Council posted a message on its social media accounts revealing the Castle House, which is in Great North Road, was evacuated shortly before 12pm.

Both Nottinghamshire Fire and Rescue Service and Nottinghamshire Police are aware of the incident.

A statement posted on the council's Facebook page urged people to stay away from the building until further notice.

Staff were allowed back inside the building at around 1pm.

This is a breaking news story. We will provide more information as soon as we have it.

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