It is the second attack at the site after ``Shoey [picture of a heart] Kelly'' was written on the brick wall on July 9.

The Advertiser revealed last month that a group named ``FAK Familyy'' had been created on the social network site Bebo, openly boasting about their vandalism and taunting police in Campbelltown.

``Can't catch us,'' one member has now bragged.

Last week, the graffiti gang struck again after writing FAK many times with spray paint on the new building.

Chief Inspector Bryan Doyle said that when people saw tagging, they saw crime.

``Officers attached to Operation Graffiti are commencing to work through the persons of interest identified as being part of the FAK graffiti gang,'' he said.

``Campbelltown police have been arresting graffiti criminals and disrupting their networks. The community response has been great and we have received a great deal of information in relation to the identity of individual graffiti criminals.''

Anti-graffiti committee leader Les Turner wrote a letter to NSW Attorney-General John Hatzistergos after a meeting last week.

``I have a small aviary and garden shed manufacturing business in Campbelltown and I have been operating in the same premises for over 20 years, and in the past few years I have seen a rapid acceleration of this unwanted culture,'' he wrote.

``Frustration from the residents of Macarthur has caused us to form a fight-back group to work with the police and council to change the laws to show that there is no tolerance with this sort of crime.''

The committee has asked for a ``no-tolerance law'' and suggested that first-time offenders older than 16 should be fined heavily and be detained on weekends to clean away graffiti.

The letter also stated: ``Every juvenile caught should have to attend this cleaning program and they could be accompanied by their parent.''

Second-time offenders would receive a short jail term and large fines, the committee said.

``No one should be let off,'' Mr Turner said.

The Advertiser was a victim of a revenge attack on September 3 a day after the FAK Familyy boasts were exposed in this newspaper.