Police arrested a 30-year-old Healesville man after he allegedly stabbed a man on a train.
They said a 42-year-old man suffered non life-threatening wounds and was taken to hospital following the incident on a train between Mooroolbark and Lilydale about 3.40pm on Wednesday 19 June.
Police arrested the alleged attacker a short time later at Melba Park and he was remanded to appear at court on Thursday 20 June.
Police urged any witnesses to call Crime Stoppers on 1800 333 000 or visit www.crimestoppersvic.com.au.