A second man, aged in his 40s, was also injured in the incident and is being treated in hospital.
Gardai in Dublin are investigating following a fatal stabbing in Tallaght.
A man in his 20s died following a serious assault yesterday evening.
Caoimhseach Connolly reports:
"Gardai responded to a serious assault at Mac Uilliam Road at around 7.15pm yesterday.
A 25 year old man was taken to Tallaght Hospital in a serious condition - he later died from his injuries.
The scene has been preserved and the State Pathologist has been notified.
A postmortem examination is due to take place later today.
A second man, aged in his 40s, was also injured in the incident and is being treated in hospital.
His injuries are not thought to be life threatening.
Gardaí are appealing to any witnesses to come forward, and for any drivers who were passing the Mac Uilliam Road area between 6.30 and 7.15 yesterday evening who may have dash cam footage to contact Tallaght Garda Station. "
Crime Reporter with the Irish Daily Star Paul Healy was at the scene shortly after the attack last night.
This woman lives nearby
:

Two Men Charged In Connection With €4 Million Cocaine Seizure In Kildare And Wexford
Court Dismisses Bid To Block Super Junior Ministers From Cabinet Meetings
Driving Testers At RSA Balloted For Industrial Action Over Concerns About Uninsured Vehicles
Homes Undelivered After Substantial Deposits Paid, Kildare Council Warns Of Potential Unauthorised Works
Over 1,000 E-Scooter Fines Issued As Kildare TD Calls For Tougher Penalties After Child Injured
Court Told Man Accused Of Knife Attack On Children Outside Dublin School Unfit To Stand Trial
Celbridge "Affordable" Homes Come With Council Equity Stakes
Lucan Woman Pleads Guilty To Sending Threatening Messages To Tanaiste