The force declared the incident on the social media platform X on Sunday morning.
The statement said: “Norfolk Police are dealing with a major incident. We are unable to handle non-emergency calls at this time.
“Please visit our website for information about the incident and how to report non-emergency incidents.
“Only call 999 in an emergency.”
Norfolk Police tweeted this morning (Image: X)
Despite a link in the post, it does not provide any further information.
