Emergency services are on stand-by in the centre of Cambridge after an abandoned rucksack sparked a bomb scare.
The Lion Yard and Grand Arcade shopping centres are believed to have been evacuated and police cordons are in place on nearby streets.
A spokesman for Cambridgeshire Fire Service, which has one crew on the scene, said a bomb squad had arrived within the last half an hour.
She said they had been called in following reports of a rucksack which had been abandoned at the Grand Arcade.
East of England Ambulance Service spokesman Gary Sanderson confirmed it had received a call at 2.13pm to a report of a suspect package.
He added: "The trust's hazardous area response team (HART) are at the scene liaising with their emergency service colleagues as a precautionary measure."
More top news
Paul Alexander joined thousands of children fleeing Hitler’s regime shortly before the Second World War.
Peterborough United have signed Grimsby Town forward Siriki Dembélé for an undisclosed fee.
A month on from the biggest rail timetable shake-up in a generation and commuters say they are still facing delays and cancellations.