I think we should rule out the horses; they're connected to Gabriel, and Magnus is the one who was killed. So, we need to look for clues somewhere else.
I associate it with an "ambulance," but Magnus couldn't have been a doctor, so he was probably a police officer or a thief who stole something from the police officer. =/ That's sad...
The idea with Brack is good, but I'll keep looking for something else... What if Arandorka is the mafia? <_<
