The torture chamber discovered last month in a container in Wouwse Plantage, was full of attributes that can be used to torture. For example, pruning shears, loppers, a branch saw, scalpels, pliers, extra handcuffs, finger cuffs and tape were found, the Public Prosecution Service (OM) reports in a detailed report about the case on Tuesday.

Six other rooms were arranged as a cell. Handcuffs were attached to the ceiling so that someone could be chained standing up with their arms raised.

"Furthermore, there was only a chemical toilet. In the corner was a camera mounted, to keep a distance view of the situation in each cell," said the OM. "The image of the sea containers is freezing and shocking."

NRC wrote about the torture container based on sources last week, and also reported that six suspects had been arrested. The Public Prosecution Service confirms this and can further report that this concerns, among others, a 40-year-old man from The Hague, a 44-year-old man from Nieuwegein and a 43-year-old man from Rotterdam. The other suspects are from Spijkenisse, Utrecht and Lexmond.

OM: 'Shed was designated as treatment room'

Police have been observing the shed since April. The hack of EncroChat, which was made public last week, allowed police and justice to read live for weeks the messages that criminals sent to each other through the program.

"In those messages, photos were sent of a pilot and a sea container with a dentist's chair, with straps on the armrests and the footrest. There was talk of kidnapping and torture," the prosecution outlined.

"If I have him on the chair, more will come" and "But that dog is missing" are some of the messages read by police and law enforcement. "The warehouse was designated as 'ebi' (which is the Extra Secure Facility in Vught) and 'treatment room'", reports the Public Prosecution Service.

One of the cells in the container. (Photo: Public Prosecution Service)