The killer of a Melbourne lawyer who was gunned down in Melbourne's inner-north remains on the run.
It comes amid suggestions an international hit-man may have been engaged to perform the killing on behalf of an organised crime group.
But as police try to piece together the events that led to the death of Joseph "Pino" Acquaro (uh-kwuh-ro), tributes have started to flow for the slain man who some describe as friendly, humble and generous.



