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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Some sunny intervals are possible initially this morning but cloud and patchy rain will gradually sweep in as the day goes on.
The final score was Northampton 24 - Saracens 29 at Franklin's Gardens.
The Anglia region looks likely to enjoy a drier and sunnier spring than normal in 2015 although temperatures are near normal.