Major Collision Investigation Unit detectives have arrested a 35-year-old man following an alleged hit-run in Clayton South this morning.
The Braybrook man attended the Monash Hospital where he was arrested a short time ago and is under police guard.
The arrest relates to an incident on Clayton Road where two pedestrians were struck by a car while waiting at a bus stop on Clayton Road shortly after 11am.
The 17-year-old Clayton girl was taken to hospital where she remains in a serious condition.
The man was taken to hospital with life threatening injuries.
Police urge any witnesses or anyone with dash cam footage of the collision to contact Crime Stoppers on 1800 333 000 or submit a confidential report online at www.crimestoppersvic.com.au.