About 200 youths behaving badly put a damper on an otherwise successful Light Up Camden Festival on Thursday night.
Camden local area command crime manager Paul Albury said overall the event, on Argyle Street, between 6pm and 8pm was well patronised and police were happy with the crowd's behaviour.
``However, after the event police were frustrated by about 200 youths, both female and male, many of whom were intoxicated behaving in an antisocial way around Argyle Street,'' he said.
Detective Inspector Albury said the youths, aged about 15 and 16, were involved in multiple brawls, standing in the middle of the road and minor theft.
``The concern that police have in relation to this issue is that multiple kids were left unsupervised by parents,'' he said.
``We call on parents over the Christmas-New Year period to be aware of where your children are at all times and do not allow them to consume alcohol.''