Seats were removed from trains travelling between Lithgow and Katoomba and piled high in a carriage on February 14.
The mountain of seats on the train travelling on the Blue Mountains line.
The incident occurred between 10.20pm and 11.20pm on Valentine’s Day and was reported to police.
CCTV footage of the three people who may be able to assist police with inquiries.
Following investigations, police have released CCTV images of three people who who may be able to assist with inquiries.
Police are urging anyone who knows the identity of the three depicted in the images, or anyone with information, to come forward. Call Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page: https://nsw.crimestoppers.com.au/