GERRY Adams has told the trial of his younger brother Liam that his sibling admitted sexually abusing his daughter.
The Sinn Fein president said that Liam Adams made the alleged admission during a meeting in Dundalk in 2000.
"I had a long walk with Liam. We had a number of conversations. During the course of that he acknowledged that he had sexually abused Aine. He said it only happened the once," Gerry Adams told Belfast Crown Court.
When asked to describe his brother's demeanour for the jury of six men and six women, Gerry Adams replied: "He was very upset. I remember it was raining."
Liam Adams, 57, from Bearnagh Drive in west Belfast, denies 10 charges of child sex abuse including rape, indecent assault and gross indecency against his daughter between 1977 and 1983 when she was aged between four to nine years old.
Aine Adams, 40, has waived her right to anonymity.
Gerry Adams was sworn in as a prosecution witness this morning.
Ciaran Murphy QC, counsel for the prosecution, asked Mr Adams to outline the language his brother used when he made the alleged admission.
He said: "To the best of my recollection the terms that he used were that he had molested her or that he had interfered with her, that he had sexually assaulted her."
Mr Adams said he had first confronted his brother about the alleged abuse during a meeting in Buncrana, Co Donegal in 1987. He told the court at that time Liam Adams denied the allegations.
He also denied that he had threatened to hit his brother with a hammer if the allegations were true.
"No I did not," Gerry Adams said.
Later, defence barrister Eilis McDermott QC suggested that the alleged admission had not taken place.
"You say that your brother made an admission to you in 2000 walking in the rain in Dundalk. I should make it clear to you that I suggest no such admission was made."
Gerry Adams replied: "I don't accept that but I understand it."