According to von Sydow, what happened could damage public confidence in a way that affects the entire police force.

She welcomes the investigation set up by the Police Authority to find out if any irregularities were committed, but at the moment has no views on the private relationship that Löfving and Staaf may have had.

- It could be a problem, but I don't know how it was in this case because the information is different.

But there is a general discussion within the Police Authority about how closely you can work together if you have a relationship - if you are siblings or have a love relationship, you should not work so closely together. 

On Monday, prosecutors began a preliminary investigation into gross misconduct in connection with the appointment of police chief Linda Staaf in 2015. Both she and Mats regional police chief Löfving - who has been reassigned to other tasks - will be questioned after the turn of the year.

Considering what has emerged so far, how does your trust in the police leadership look like?

- With the knowledge I have today, my trust in the national police chief is intact.

But trust is a fresh commodity and we'll see where we end up in the future.

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A secret relationship between two of the country's top police chiefs has been uncovered after a police report was made - here's a 60-second summary of the incident.