Norfolk Police has said that an "assessment is still being carried out around the munitions which may be on the aircraft". A statement said:
It is not believed that anyone in the surrounding area has been injured. However, there remains a 400m cordon around the site, which is standard for this type of incident, whether civil or military.
An assessment is still being carried out around the munitions which may be on the aircraft and advice from the military is being taken.
All emergency services are at the scene while investigations continue. To ensure their safety, members of the public are asked to respect the cordons that are in place as enquiries are ongoing.
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