The Fianna Fáil leader claims there was a cover-up within the Republican movement - similar to that in the Catholic Church - of sexual abuse.
The comments come after Liam Adams - the brother of the Sinn Féin President - was today jailed for 16 years for raping his daughter.
Micheál Martin now claims that he has become aware of a number of other alleged cases.
And he says questions have to be answered in relation to the handling and reporting of these:
