UPDATE

The man has been named locally as Oisin Crawford. 

22 year-old Crawford was found dead at a flat in the village of St. Johnston in the early hours of this morning. 

Four others were also taken to hospital - an 18 year-old girl, and three males aged 18, 22, and 25. One of the males is in a critical condition. It has been reported that the 18 year-old female is also in a critical condition.

Tributes have been pouring in for Oisin via social media, and there is widespread shock at his passing, while prayers are being said for his friend who is in a critical condition. 

Gardaí and Ambulance were called to the scene after a 999 call at approximately 4.30am this morning. 

The HSE in the North West have, in light of the tragedy, issued a warning about a substance called Double Cross and/or Double Black.

Gardaí had issued a nationwide warning last week about a lethal batch of ecstasy, with recent deaths around the country linked to the substance. 

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A 22 year-old man died following a house party in St. Johnston in the early hours of this morning, while four others have been taken to hospital.

It is understood that they had returned to the house to continue celebrating follwing a 21st birthday party.

Drugs are expected to have played a part in the death of the 22 year-old, and in the hospitalization of the four others - three male, one female. 

His body has since been removed.

Gardaí and forensics are investigating.

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