Kate Hemingway reports from the A16 where an ambulance veered off the road earlier this morning.
The 75-year-old patient who was travelling in the back of the ambulance died as a result of the crash.
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The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Mostly cloudy tonight. Brighter with warm sunny spells tomorrow.
Another dry day with sunny periods, becoming locally very warm.