The police interview with Mona Sahlin lasted two hours, according to Håkan Roswall, chief prosecutor at the Prosecution Office.
"It concerns a misrepresentation that she has written that this bodyguard has an income that he actually does not have," says Håkan Roswall to tabloid Aftonbladet.
The bodyguard was taken in for questioning but did not comment.
Lawyer Claes Borgström assisted Mona Sahlin during the hearing,
He tells news agency TT. "Of course she denies the accusations.The information she has provided in these certificates has been correct at the time she wrote them," says Borgström.
If the police and the prosecutor did not share Sahlins's view, she has according to Borgström "under all circumstances" lacked intent or intent to mislead or give any false information.
"She has not committed any crime. She is relieved that it has come so far that she has been able to tell the police how she sees it," says Borgström.
Mona Sahlin resigned last spring from the post of national coordinator against violent extremism.