A large amount of flammible material was burnt near a NI Water pump house in Strabane on Sunday night.
Two blue wheelie bins filled with recycled material were burnt, and youths who were drinking in the area at the time are being blamed.
The incident comes prior to a PSNI meeting which is to focus on anti-social behaviour in the town tomorrow night.
Local Cllr Karina Carlin said access to the pump house, which produces water for the area, is being made difficult:
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