A police sniffer dog discovered a quantity of suspected illegal drugs after a search on a music fan attending the Barra Fest festival.
The dog gave a positive indication on the male and a small amount of drugs were found after a search.
A teenager was arrested for assault following an incident at the Daliburgh Co-op on Saturday.
It is alleged that the 18-year-old male hit a staff member at the store. A report is being sent to the procurator fiscal.
Police are appealing for information after a car was vandalised outside the Dunard Hostel in Castlebay.
A wing mirror was ripped of the silver coloured Vauxhall Vectra when it was parked on the roadway by the backpackers hostel earlier on Sunday.