As I understand it, it wasn't "digging around", but two women who reported sexual assaults that he committed.
http://www.nnn.se/nordic/assange/docs/protocol.pdf
Accompanied by Anna Ardin, Sofia Wilén visits a Stockholm police station — by their own account, for the limited purpose of obtaining assistance in compelling Assange to take an HIV test. Anna Ardin is present during the interview with Ms. Wilén, which is conducted by a friend and political ally of Ms. Ardin.
What I do know is that a person is wanted for questioning regarding acts of sexual violence, that person has fled to another country and has refused to return for said questioning, claiming some conspiracy to send him to the USA.