The trial of a man accused of bombing London's Hyde Park for the IRA has been dropped after the judge was told about a deal granting him immunity.
62 year old John Downey had been charged with the murders of the four members of the Household Cavalry who died in the attack in 1982.
He was arrested in May 2013 at Gatwick Airport and charged with the murders and bomb attack.
Mr Downey - who was convicted of IRA membership in the 1980s - had travelled to the UK on four previous occasions.
It's understood he was given a political assurance in 2007 that he was not wanted by police in Britain.
Mr Downey denied the charges of murder and conspiracy to cause an explosion
