Leinster have confirmed that forward Mike McCarthy has decided to retire from rugby with immediate effect.
The 35-year-old joined Leinster in 2013 following previous spells with Connacht, Newcastle Falcons and London Wasps.
The lock forward was an influential figure for the PRO12 outfit, having turned out 77 times for the province and helping them into the play-off semi-finals this term.
McCarthy had signed a two-year deal to join French outfit RC Narbonne ahead of the 2017-18 season but a recent elbow injury has forced him into retirement.
Leinster said in a statement: "Leinster and Ireland lock Mike McCarthy has announced that he is to retire from rugby with immediate effect due to an elbow injury that is worse than first realised.
"As a result of this decision to retire, Mike will not as a result be joining Narbonne in the summer."