There is understood to be a 100m cordon in place around Grand Arcade in Cambridge following reports of a suspicious package.
Bomb disposal teams have been dispatched, police are expected to be in the area for several hours.
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Essex MP John Baron and South Northamptonshire's Andrea Leadsom could both put their names forward to be the next leader of the Tory party.
A devolution deal for Norfolk and Suffolk could be in doubt after two councils rejected the proposals.
It will be a fine and bright start to the day but it will turn cloudy from the west with outbreaks of rain arriving during the afternoon.