The Supreme Court has overturned a decision of the High Court, which upheld former Senator Ivor Callelly's challenge to a Seanad committee's findings on his expense claims.

The Supreme Court found in favour of the Seanad Committee on Members Interests, which had appealed the decision.

The Committee had appealed against the High Court decision which overturned its finding that when making expenses claims Senator Callely had misrepresented his place of residence as west Cork.

Mr Justice Iarfhlaith O'Neill ruled Senator Callely was in compliance with the applicable definition of 'normal place of residence' when he made his expenses claim.

In a split judgment of four to three, the Supreme Court overturned that judgment.