A bomb disposal unit was called after a 'suspect package' was delivered to an army building in Aldershot.
The package was delivered to the Army Careers Office in Hospital Hill, off Queens Avenue, on Wednesday morning.
A South East Counter Terrorism Unit spokesman would not reveal details on the nature of the package, but said a Ministry of Defence bomb disposal team had attended at around midday to 'make it safe' and investigations are continuing.
They added that similar packages were found at army careers offices in Reading, and Chatham in Kent yesterday.
All the packages are being forensically examined.
Police officers and a dogs unit also attended the scene and closed off Hospital Hill and Knollys Road, before reopening them around an hour and a half later.