Police have arrested a woman after a hit run collision in Main Ridge yesterday. The 27-year-old male cyclist has been hospitalized with critical injuries after colliding with her car on Shands Road about 6pm. A 69-year-old Flinders woman is currently assisting police with their enquiries. Major Collision Investigation Unit detectives are at the scene. Anyone who witnessed the crash is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au