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
Prince William starts his final shift as an air ambulance pilot before taking up his royal duties
Nurses have gathered in Cambridge to campaign to scrap the 1% pay cap imposed on them. The RCN says it's causing nurses to leave.
There will be some early morning sunshine before cloud starts to spill in from the west. Through the late morning showers will then develop.