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.
More top news
This Plymouth super-fan has come from Australia to watch his team in the League 2 final - but is leaving tonight!
Unsettled weather throughout the week: Philippa has your weather forecast
A young sailor from Cornwall is marking the centenary of the biggest sea battle of World War I - she is honouring her ancestor who took part