POLICE are investigating the September vandalism of a Butler train.
Officers said a man boarded a carriage at the Butler station on the night of September 24.
He used a black marker to scribble on several of the surfaces inside the train.
The offender was described as fair skinned, with short dark hair and a beard.
He had a circular tattoo on the top of his left hand.
He wore a black baseball cap, green jacket, black pants and black shoes.
Police believe the man pictured can help with inquiries.
Call Crime Stoppers on 1800 333 000 with information.