Police are interviewing witnesses after reports that a man with a weapon held up a Nationwide building society branch in Northampton.
Officers were called out at about 12,15pm to the Moulton Park branch attached to the company’s headquarters.
A police spokeswoman could only say the investigation is “ongoing”, but it is understood that the robber was carrying a weapon of some sort.
It is believed that nobody was physically hurt and that no money was handed over.
Witnesses or anyone with information is asked to contact police on 101 or Crimestoppers anonymously on 0800 555 111.