Police say the man, who was identified as one Daniel Katakumb from East Sepik Province, was shot by criminals during a carjacking outside the family residence at Henao Drive.
In a grey Mark-2, the criminals followed the man and his family, who were traveling home in a double cab vehicle.
They then ambushed the family, where three shots were fired.
According to police, the deceased had one visible bullet wound just below his waist.
An investigation has already started while leads are yet to be established.