A teenager has been arrested in connection with an assault in Cavan Town that has left a man in a serious condition in hospital.
The incident occurred outside a premises on Main Street shortly before midnight last night.
A man, aged in his 20s, was taken to Cavan General Hospital and later transferred to Beaumont Hospital in Dublin.
His condition is understood to be serious.
No other injuries were reported to gardaí.
A 17-year-old boy has since been arrested in connection with the incident and is being at a garda station in the Louth/Cavan/Monaghan Division.
Gardaí are appealing to anyone who was in the Main Street area of Cavan Town between 11pm and midnight on Friday night/Saturday morning and who may have information or camera footage relating to the incident to contact them.
Anyone with information is asked to contact Cavan Garda Station on 049 436 8800, the Garda Confidential Line at 1800 666 111 or any garda station.
Gardaí have said that investigations are ongoing.