For five years, the Swedish Environmental Crime Agency investigated what is believed to be one of the most extensive cheats with ROT deductions in western Sweden.

Thousands of pages with account statements, email conversations but also secret telephone tapping are the basis for the indictment, where seven people are suspected of involvement.

According to the prosecutor, it is a CEO of a West Swedish construction company who is the principal.

He is charged with six counts of fraud, one count of tax evasion and one count of accounting offenses.

In the clip, the reporter explains: This is how the ROT cheating must have happened

Five helpers

To help him, he must have had five people who provided him with property designations and social security numbers.

Information that must then have ended up on the false invoices that formed the basis for the Swedish Tax Agency's payments.

One of the people who has been singled out as an assistant is asked in question which people he has recommended to the company:

- Everyone in the area: brother, sister, father, sons and friends, he answers.

Not checked the renovations

But the appointed construction CEO's lawyer Ulrik Smedberg is critical of the investigation.

He believes that the prosecutor has not done the most basic thing: to check if the renovations have been done.

- It's very strange because they have not done that, my principal thinks so too, he says.

He also points out that the investigation has dragged on.

- I have never been involved in such a long, or should I say slow investigation.

It is not easy to remember what work the company did in 2011.

The evidence is strong

SVT Väst has been in contact with prosecutor Per-Olof Hermansson, who does not want to comment.

He has previously judged the evidence to be strong.

- The crimes themselves are difficult to investigate, and the extent does not make it easier.

Often in economic crime, we come in late after the Tax Agency has discovered something.

But I judge the evidence to be strong, he says.

The charges against the other suspects include serious tax offenses, gross fraud, and aiding and abetting.

All seven accused deny the crime.

7 people are prosecuted, but it is a West Swedish CEO who is the principal.

Photo: SVT Design