Police in Derry - Londonderry say they'll be monitoring the Ballyarnett area following reports of underage drinking.
They say groups of young people have been gathering in the Sandale area and engaging in alleged drug use and anti-social behaviour.
A PSNI spokesperson said:
"This behaviour is distressing local residents, and the young people are not taking into consideration how vulnerable they are making themselves whilst under the influence of these substances.
"Police will be monitoring the area over the weekend so please do not let it be your child we have to return home."
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