It's illegal for the authorities to try to trace whistleblowers in Sweden, and the Chancellor of Justice has begun an investigation.
The national Police commissioner Dan Eliasson tells Swedish Radio News that he welcomes the investigation.
"if there is the slightest suspicion that someone has tried to break the law against tracing sources, I think it is excellent that the chancellor of Justice starts an investigation," Eliasson said.
Eliasson, who started his new job on the first of January says it is crucial that also police officers shall be allowed to leak information to the media.
"It must be crystal clear yes to that question. No-one within the Swedish police force shall try to trace whistleblowers. then you are on completely the wrong path. Swedish police must respect the basic rights and liberties, and they do. If anyone is unclear about that, it is excellent that this is investigated immediately," he said.
The database itself is also being investigated by both prosecutors and the Data Inspection Board. According to reports it contains offensive and what experts believe are illegal comments on the women.