Police in Northern Ireland have launched a murder inquiry following the death of a man who was stabbed in Co Tyrone at the weekend.
Conor Browne, 28, from the Strabane area, was attacked outside a bar on Main Street in Castlederg on Saturday.
He later died from his injuries.
Two men, aged 31 and 27 years, were arrested on Monday.
Meanwhile two men, both aged 28, arrested previously remained in police custody on Monday evening.
A police spokesperson issued an appeal for witnesses to come forward.
“I would continue to appeal to anyone who believes they may have information which could assist us in our investigation into this young man’s death to contact us at the Major Investigation Team on 101 quoting reference 127 02/09/23,” they said.
Castlederg Gaelic Athletic Association (GAA) club Caislean na Deirge Naomh Eoghan expressed its sadness in a social media post.
It described Mr Brown as a “hard working, civil, funny and thoughtful young man”.
“Conor always wore the biggest smile and would have done anything for anyone. One of the real good guys! This has affected everyone in the parish. If anyone needs help or someone to talk to just pm this page and we will get you to the right resources,” it said, extending condolences to his family.
