An international search warrant has gone out for a 19-year-old Russian man from Wels and a 23-year-old Chechen from Traun, Upper Austria.
Two other suspects are already in custody - two Bosnian men aged 27 and 28 whose last known addresses were in Linz and Traun.
The Albanian man was shot in the head on October 13th. He left a pub at around 2am with two friends, and a fight then escalated with another group of men - ending in the execution style shooting in the street.
The body of the Albanian was found outside a bar on Franckstrasse, not far from a motorway underpass.