Detective Senior Constable Mark Walsh said the masked gunman said nothing as he shot Mr Kucukbas.
“He’d just arrived home from a family wedding, and as he’s approached the door, the male offender has walked up to him … has said nothing to him and has shot him straight away,” Detective Senior Constable Walsh said.
“There’s nothing in the victim’s background to suggest why … there’s no ongoing disputes.
“We’ve spoken to the entire family, they all work in the same small business. They say they spend the majority of their days working, so they don’t have any reason to believe anyone would specifically target them either.
“The fact their father’s been targeted coming home from a wedding, a time you normally celebrate … they’re really shaken in terms of why this has happened.”
A security camera trained on the area where Mr Kucukbas was shot was not working at the time.
Police believe the gunman arrived in a white or silver 4WD with its number plates obscured and driven by a masked woman with long hair.
“We believed it’s targeted in the fact that we’ve got information from witnesses that the vehicle was seen in the area for up to an hour before the incident occurred,” Detective Senior Constable Walsh said.
“We believe it’s planned, it’s just the actual underlying motive for it is unknown and it’s not clear to the family or the victim why he’s actually being targeted.
“They’re not known to police, there’s no criminal involvement prior to this so they’re actually dumbfounded as to why this has occurred.”
Police say the shooting is unrelated to a string of other recent shootings in Melbourne.
Goya Dmytryshchak is a reporter for The Age.
Ashleigh McMillan is a breaking news reporter at The Age. Got a story? Email me at firstname.lastname@example.org