A pedestrian is dead and another left clinging to life after a car drove onto a path outside a popular fan convention.
The grey Toyota hit two pedestrians as it mounted a kerb at Melbourne Showgrounds in Ascot Vale on Saturday evening during the first night of the Supanova expo.
One died at the scene and the other was taken to hospital with life-threatening injuries, police said.
Officers have arrested a man, who is set to be interviewed by police, and investigations are ongoing.
Police are calling on any witnesses to contact Crime Stoppers.
Thousands of comic and gaming fans flock to Supanova Comic Con and Gaming every year, with the Melbourne event adding crowds of visitors to an already-busy area.
World-famous celebrities including Stranger Things' cast member Jamie Campbell Bower and Andy Serkis, who played Gollum in Peter Jackson's Lord of the Rings trilogy, were set to headline the expo.
Australian Associated Press