As of early Tuesday morning police had yet to make any arrests in the case.
According to Västerås police spokesperson Börje Strömberg, a witness heard a shot fired and saw a man crumble to the ground outside his home.
“We don’t know if he was shot inside or outside. The witness saw a white or light-coloured station wagon disappear following the shooting,” Strömberg told the TT news agency.
Police believe the man was home alone when he encountered the assailant. Police had no indication of any specific threat against the 45-year-old who, according to the Aftonbladet newspaper, had earned millions of kronor in the oil business.
Police later discovered a light-coloured car abandoned near a rest area between the crime scene in the village of Brandbo and the nearby town of Fagersta.
The car has been taken by police and will now undergo a forensic examination, although police say it’s too early to know whether or not the car had anything to do with the crime.
“We still have no motive and no suspects,” said Västmanland county police spokesperson Ivan Åslund to TT early Tuesday morning.
“The victim isn’t someone we’ve had previous contact with and as far as we know there were no existing threats against him. During the day we plan to interview more friends and acquaintances to see if we can get any clarity. Until then we’ll be checking every thinkable assailant.”