One allegation of the sexual abuse of a child by former Bishop of Kerry, the late Eamonn Casey, was handled by the Diocese of Kerry, and the person involved was given counselling, the diocese has confirmed.
The Diocese of Kerry did not reveal when exactly the "historical concern" was alleged to have occurred.
In a statement, the diocese said: "Given that information relating to Bishop Casey is now in the public domain, we can confirm that one historical concern regarding Bishop Casey was received by the diocese.
"This information was forwarded to the gardaí and the HSE and the person concerned was offered support by the diocese."
Born in Adare, Co Limerick in 1927, Casey was Bishop of Kerry between 1969 and 1976 and was heavily involved in youth affairs, initiating a number of projects and programmes for teenagers particularly.
The diocese says it had made full disclosure of all its records in relation to safeguarding in the 2013 Safeguarding Audit, carried out by the Church-established National Board for Safeguarding in the Catholic Church.
The report shows that 67 allegations were received by the diocese from 1975 to 2013, all of which were reported to the civil authorities.
But at the time of the review, the auditors criticised the absence of any Complaints Procedure which they said was a "weakness". This was subsequently rectified
Since 2013, an additional 23 allegations have been received by the diocese and all have been reported to the authorities, a diocesan spokeswoman said.
Bishop Casey later became Bishop of Galway, but he resigned for personal reasons in the 1990s.
In a scandal without precedent in the Catholic Church in Ireland, it was revealed he had been making payments to Annie Murphy to support their son.
Peter Murphy was born in 1974 while his father was Bishop of Kerry.