Thanet increasingly appears to be the playground of armed robbers.
Kent Online reports Friday's raid on the Nationwide in Broadstairs, where two masked men armed with handguns robbed a security guard who was delivering cash to the building society.
The raiders, who were both wearing balaclavas escaped after stealing three cash boxes from a Group 4 security guard.
Police have confirmed that the robbers were seen carrying handguns but no shots were fired and nobody was hurt during the incident at around 8.30pm.
A police spokesman said it is thought the men drove away at speed from a car park in Prospect Place, possibly in a dark-coloured old-style Porsche or Saab. The area was cordoned off while the car park and nearby roads were searched.The amount of cash stolen is not yet known.
Police say the cash boxes - which are grey with bright yellow stickers and green handles - may have been dumped and have urged anyone who finds them to get in touch. Anyone with information is asked to contact police on 01843 222194 or Kent Crimestoppers, anonymously, on 0800 555111.