Police are investigating a disturbance on a Mandurah bound train.
Around 5pm on September 25, a group of teenagers were on a train which had departed Perth Train Station and was heading to Mandurah when it is believed they were involved in a verbal altercation with other passengers and a scuffle began.
A passenger pushed the emergency button and the train stopped at Aubin Grove Train Station.
As Public Transit Authority (PTA) officers were detaining some of the group an altercation occurred which resulted in the officers deploying pepper spray.
Detectives wish to speak to anyone who was on the train or at the train station and witnessed the incident.
Anyone with any information or mobile phone vision of this incident is urged to contact Crime Stoppers on 1800 333 000 or report online at www.crimestopperswa.com.au.