Woman arrested over Vic hit-run

A teenager is in a critical condition after being hit by a four-wheel drive in Victoria's Mornington Peninsula.

The 17-year-old was treated at the scene and airlifted to hospital in a critical condition after he was hit in Mount Martha about 1.20pm on Wednesday,

Police say the 46-year-old female driver stopped at the scene but drove off and was arrested down the road.