Conversation so far:
What happened during the aftermath of Euronymous' murder?
Vikernes was arrested on 19 August 1993 in Bergen.
How did Vikernes, Blackthorn and a third person plan the murder of Euronymous?
Someone stayed at Vikernes's apartment as an alibi. He was to rent films, play them in the apartment, and withdraw money from Vikernes' credit card as an alibi.

Question: Did the police question them?
Self-contained rewrite: Did the police question Blackthorn and Faust in connection with Euronymous' murder?