Police in the North investigating the murder of Jason McGovern have arrested a 21-year-old man in the Omagh area.
He is currently assisting detectives with enquires.
The 19-year-old Monaghan student was found dead at a friend's house on New Years Eve.
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He was attacked at 2 different pubs in Omagh, Co. Tyrone the night before.
Appeal for Renault Megane car
Police are making a specific appeal to speak to people in a dark coloured Renault Megane car which was parked outside the Terrace Bar in John's Street in Omagh on New Years' Eve at the time of the assault.
They believe these people may have witnessed the incident.
3 teenagers aged 19, 18 and 17 also remain in police custody in connection with the death.
Another man was released without charge.
