Gardaí in Co Offaly are continuing to question three people arrested earlier today in connection to a fatal stabbing in Tullamore.
The victim, a 28-year-old man, died at the Midlands Regional Hospital this morning after he was injured during an altercation involving up to 10 people.
He was named locally as Derek McDonagh, a married father of one.
Three men were arrested after gardaí were called to the incident on the Arden View housing estate in Tullamore, shortly after 11am.
The men are being detained at Tullamore Garda Station under Section 4 of the Criminal Justice Act. A garda spokesman said investigations were continuing.
The suspects are believed to be living on a halting site in the town. It is understood the row was not part of any ongoing feud among families.
Members of the Garda Armed Response Unit are patrolling parts of Tullamore tonight.
Councillor Brendan Killeavy, a Sinn Féin member of Tullamore Town Council, said the dead man was from a quiet family and his killing has left the community in shock.
"They are a very very quiet family and are well respected in Arden View and well liked," he said.
"They have never given a bit of trouble and keep themselves to themselves. This has come completely out of the blue. We're shocked and devastated.
"It's a sad day for Tullamore and for his family." Extra gardaí have been drafted in to the midlands town, where the atmosphere is said to be tense.
Mr Killeavy called on the community to support gardaí to make sure there are no other incidents.