Ian Bailey arrives at the Criminal Courts of Justice in Dublin.
The French authorities are attempting, for the second time, to have Mr Bailey extradited to France, to face trial over the death of Sophie Toscan du Plantier west Cork, in 1996.
Mr Bailey has always denied any involvement in her death.
Yesterday, Mr Bailey’s lawyers told the High Court that the question of Mr Bailey’s extradition to France had already been decided by the Supreme Court in 2012 and that the second attempt was an abuse of process.
The case continues today.