Sinn Féin leader Gerry Adams has said he has "nothing to fear" from the Belfast Project archive at Boston College being turned over to British authorities.

Mr Adams described those who gave interviews to the college as "unfortunates".

The interviewees remain secret and the only people known to have given interviews are the late Brendan Hughes and Dolours Price.

Speaking on RTÉ's This Week programme, Mr Adams described those who conducted the interviews with Republican paramilitaries as "culprits".

He said claims by Mr Hughes that he was a Commanding Officer in the IRA are untrue.

Commenting on his leadership of the party, Mr Adams said he has not given any thought to standing down as Sinn Féin leader.

The 63-year-old said that a mixture of experience and energy is needed and Sinn Féin has that.

He was also asked to comment on consistent criticism of his Dáil performances as party leader.

Mr Adams said "let be as it may be" and added that the Dáil is a dysfunctional institution and debates often replicated scenes from Father Ted.

Separately, Mr Adams said his party has received legal advice that indicates a referendum will be needed on the EU Fiscal Treaty.

He said that there is a constitutional imperative for the treaty to go to a referendum.

Mr Adams said his party will oppose the treaty and is considering a legal challenge forcing the Government to put the treaty to the people if it fails to do that itself.

He said warnings that a rejection of the treaty could lock Ireland out of the European Stability Mechanism Fund were "scare tactics" and "lies".