Major Collision Investigation Unit detectives have arrested a man following an alleged hit-run collision in Dandenong yesterday afternoon.
The 33-year-old man was arrested at an address in Hallam about 11pm last night.
Detectives also seized a car and a trailer.
The arrest follows a collision on Clow Street where a dark-coloured SUV towing a covered box trailer allegedly struck a pedestrian about 2.15pm.
The victim, a 24-year-old Dandenong man, was conveyed to hospital with life-threatening injuries.
The Hallam man remains in custody assisting detectives with their enquiries.
Anyone with dashcam footage or information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au.