Gardaí have renewed their appeal for information following the sudden death of a teenage girl at a nightclub in Donegal almost a year ago.

17-year-old Tori Johnston collapsed at Voodoo Nightclub on the morning of 15th July 2015.

She was taken by ambulance to Letterkenny University Hospital where she died the following morning.

Investigations to date have not determined the cause of Tori's death, and Gardaí wish to thank all those who assisted during the course of the investigation.

However, they believe that other people who attended Voodoo Nightclub on the morning of Tori’s death have yet to come forward.

Anyone with any information is being asked to contact Letterkenny Garda Station on 074 9167100 or if they wish to remain anonymous they can call the Garda Confidential Telephone line on 1800 666 111.