The item has been discovered at Festival Place in Basingstoke, which is home to stores including Zara, Debenhams, Next, HMV and Apple.
Basingstoke police tweeted: ‘You may see a larger police presence in Festival Place this afternoon.
‘Officers have put in place a 100-metre cordon after what is believed to be a suspicious package was found in a toilet.
‘Please listen to instructions from officers at the scene.’
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A salon based in Festival Place, Truly Scrumptious, said it had to close because of a ‘bomb scare’.
It tweeted: ‘We have had to close the Basingstoke salon due to a bomb scare in Festival Place.
‘The police have told us to evacuate the building.
‘Fingers crossed we’ll be open tomorrow.’