Police investigating the murder of Jason McGovern in Omagh, Co Tyrone last week have arrested a 23-year-old man.
The 19-year-old was found dead at a house in Emyvale in Co Monaghan on New Year's Eve after being assaulted twice in Omagh the night before.
Five men and a teenager have been charged with affray in connection with the incident.
Police said the 23-year-old man was arrested in the Omagh area and is assisting them with inquiries.
Mr McGovern's funeral took place this morning at St Patrick's Church, Corracrin, in Co Monaghan.