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
A growing number of rank and file officers say they support being routinely armed while on duty in the wake of terror attacks.
A year after Corrie went missing, Suffolk Police have told ITV News Anglia that their investigation has been "thorough" and "meticulous."
Northamptonshire Police is to make changes to the way it fights crime - to improve its efficiency and flexibility.