One person has been treated for smoke inhalation after a letter bomb went off inside ING Bank in Amsterdam on Thursday.
An investigation has been launched to identify where the package came from.
A total of 11 packages rigged with explosives have been delivered to different businesses across several Dutch cities over the last few weeks.
All failed to explode expect two letter bombs that detonated - - one in Amsterdam, while another in Limburg province - on Wednesday. No one was injured in both instances.


Trump adds seven countries to full travel ban list
Indian parliament votes to allow private firms in nuclear power sector
Doctors in England start five-day walkout during flu surge
Israeli settler kills 16-year-old Palestinian in West Bank, mayor says
