The man was stabbed a number of times.
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Police in the North are appealing for witnesses to a stabbing incident in the early hours of this morning.
A 28 year old man was stabbed a number of times - including on his face and neck - following an altercation in the Main Street area of Castlederg in Tyrone at about 1.30.
A 27 year old man has been arrested on suspicion of attempted murder.
However, a number of suspects left the scene in a white-coloured Vauxhall van.
Anyone who was in the area at the time or has information is asked to contact the PSNI.