The names, addresses, birth dates and bank account numbers of "in all probability" all current and former employees of construction company Strukton Rail were stolen by an ex-employee, the company announced on its website on Wednesday. Probably it concerns thousands of people.

Moreover, the data of Eurailscout employees has also been stolen. This company is half owned by Strukton. It is unclear exactly how many victims are involved.

Research showed that the data would have been stolen by a former employee who had access to the systems. This person would have taken pictures of it.

It is also unknown whether data from international branches of the companies has been stolen or whether it only concerns Dutch branches.

A spokesperson for Strukton was not immediately available for questions on Wednesday. This message is supplemented as soon as more information is known.