Officers say they were threatened by a man with a firearm.
The injured man is under arrest and in a stable condition in hospital.
We have referred the matter to the IPCC and will support them in their investigations."
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Overcast and windy tomorrow for the South West and it will stay like that for a few days yet. Alex Beresford has the forecast.
A wet start and overcast at times tomorrow and that weather is likely to dominate for the next few days. Alex Beresford has the forecast.
A man has been arrested for threatening Gina Miller, the woman behind the Brexit legal challenge, over the internet.