The incident occurred within the carpark of Dan Murphy's at Jackson's Courtroom Buying Centre in Doncaster East about 1.20pm.
The person, aged in his 80s, died on the scene.
It's understood the person was dragged about 100m by the ute, which was being pushed by an 81-year-old man.
The precise circumstances surrounding the collision are but to be decided and investigations are ongoing.
The driving force is talking with police.
Anybody who witnessed the incident, has dashcam footage or another data has been urged to contact police.