Sutherland police arrested a group of six teenagers for spraying graffiti after Bangor residents called to report them on Friday night.
Police went to a Scout hall on Pyree Street, Bangor at 10.10pm.
One of the teens had allegedly been spraying graffiti as police approached and four of the group later admitted spraying tags onto the hall.
Another was caught with a can of paint and police confiscated a 750ml vodka bottle from a girl.
The teenagers were aged between 15 and 17 and lived in Barden Ridge, Bass Hill, Alfords Point and Georges Hall.
Police formally cautioned them all under the Young Offenders Act.