Inspectors from the Health and Safety Executive (HSE) are at the scene of an incident at the Royal estate at Sandringham.
A spokesman for the HSE said:
No formal investigation has been launched, but we do have inspectors at the scene with police who are making initial enquiries.
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A court's heard how a man accused of murdering his partner carried on with normal life in the days after he allegedly killed her.
An unusual species of bird is enjoying a winter vacation here in the UK, according to the RSPB charity.
Clearer spells will develop through the night, particularly in the east, with frost and perhaps some patchy fog.