Police have appealed for assistance from the public in establishing the circumstances behind the death of a Co Donegal teenager in Derry city.
Caolan Page, aged 19, from the village of Carrigans was found unconscious outside a licensed premises in Magazine Street in Derry early on Saturday morning.
He was brought to Altnagelvin Hospital in the city in a critical condition.
The PSNI said yesterday that Mr Page from the Upper Kildrum area of Carrigans had died.
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Police asked for public assistance in establishing how he died. They were particularly anxious to speak to anyone who noticed anything suspicious in the Magazine Street area.