Eyewitnesses report hearing lots of shouting followed by the scene of a man being laid out on the ground on the corner of Paris Street and Sidwell Street, in Exeter yesterday. Police are describing this as a violent arrest.
The man was taken into custody where it's believed he collapsed and was taken to the Royal Devon and Exeter hospital. He is described as being in a serious condition.
Eyewitness John Hunt spoke to our reporter Seth Conway.
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Stephen Gilbert who was the constituency's MP from 2010-15 will contest the St Austell & Newquay seat for the Liberal Democrats on 8 June.
It'll be dry and sunny to begin with this Bank Holiday weekend in the West, but with showers just around the corner.
It's a mixed weekend for the South West ahead with sunshine on Saturday but rain and showers across Sunday and Monday.