Avon & Somerset Police are appealing for spectators with video or photos of the fatal accident to contact them.
The crash happened as 23-year-old cyclist Junior Heffernan came round a bend during the Severn Bridge Road Race.
Here is Acting Inspector Darren Jarvis...
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Police in Wales have found a body in the search for missing Hollie Kerrell from Kingsbridge. A 35-year-old man has been arrested
Persistent rain today especially towards the afternoon.
Possibly clearing up towards the evening.