Police are now seeking public assistance to identify a man who could lead them to the culprits.

Campbelltown Chief Inspector Bryan Doyle told the Advertiser community support was a vital resource that was of great value to the police.

``It can also include giving information anonymously via Crime Stoppers which gives police avenues for further investigation,'' he said.

``This can take the place of providing police with direct evidence by way of a statement about an offence.

``In relation to this incident, CCTV footage has depicted a number of tags that have been placed on trains, the railway station, and bus interchange area. All information regarding local graffiti is assessed by Campbelltown police attached to Operation Graffiti.''

The man police are seeking is described as in his early 20s, tall, short dark hair, Caucasian, thin build, wearing dark jacket and pants.

Chief Inspector Doyle said Operation Graffiti was about reducing graffiti crime by identifying, arresting, and charging offenders.

``Graffiti is a serious crime which involves damage to public and private property and it is often linked to a range of other offences,'' he said.

``One of the main evils of graffiti is that it causes people to have a heightened fear of crime. As a community our focus is on education that graffiti is a crime, unrelenting law enforcement and rapid removal of graffiti.''

Anyone with information should contact Campbelltown police, 46201199 or Crime Stoppers 1800333000.