The cause of the fire at the University Arms Hotel in Cambridge is believed to be accidental, according to the Cambridgeshire Fire and Rescue Service.
Almost 150 people had to escape from the iconic building when a devastating fire broke out on Tuesday.
Update: Cause of Fire at University Arms in Cambridge was accidental - believed to be fault in air conditioning unit
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A joint investigation will be carried out between the Police and the Maritime and Coastguard agency.
Early mist and fog clearing. Lengthy spells of sunshine. Feeling cold.
Another cold night ahead. Dry with sunny spells tomorrow after early mist and fog clears