A search has resumed for a 17-year-old boy who went missing while swimming with friends off the Co Donegal coast in the early hours of the morning.
The teenager, from Co Derry, was last seen in Lough Swilly near Rathmullan Pier at around 1.30am.
It is understood he had gone swimming with three friends after a birthday party in the area.
A search helicopter dispatched from Sligo was helped by local fishing crews and lifeboats from the Irish Coastguard station at Mulroy in an overnight search.
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That was called off at 7am, but the two lifeboats from Mulroy have now re-started the operation.
They are being assisted by divers from the Sheephaven sub-aqua club.
PA