Police responded following reports of an affray in Hoppers Crossing on 28 May.
It is believed four teenage girls and two women were involved in a physical altercation outside a shopping centre bus stop about 5.25pm.
Both women got onboard an oncoming bus and were followed by one of the teenage girls who became verbally aggressive towards the pair.
The driver of the bus alerted police who attended Cameron Drive where one woman, believed to be aged in her 30s or 40s, was treated by paramedics for minor injuries.
The exact circumstances surrounding the incident are yet to be determined and police urge anyone who witnessed the incident to come forward.
Anyone with information is urged to contact Crime Stoppers on 1800 333 000 or submit a confidential report at www.crimestoppersvic.com.au
