Allied Irish Banks ( AIB ) , now owned by the government of Ireland , has attacked Citibank 's efforts to have AIB 's $ 500 m case against it dismissed by a New York judge . AIB has claimed that Citibank aided a fraud committed by rogue trader John Rusnak , who caused $ 500 m if losses to investors at former AIB subsidiary , Allfirst . It has argued that the judge has so far " overlooked undisputed facts and controlling factors that compel dismissal of this action . " However , a judge said recently that she believed there is " credible " evidence that Citibank helped AIB . Mr Rusnak pleaded guilty to bank fraud in 2002 and was sentenced to seven-and-a-half years in prison. The case continues .
Allied Irish Banks ( AIB ) , now owned by the government of Ireland , has attacked Citibank 's efforts to have AIB 's $ 500 m case against it dismissed by a New York judge . AIB has claimed that Citibank aided a fraud committed by rogue trader John Rusnak , who caused $ 500 m if losses to investors at former AIB subsidiary , Allfirst . It has argued that the judge has so far " overlooked undisputed facts and controlling factors that compel dismissal of this action . " However , a judge said recently that she believed there is " credible " evidence that Citibank helped AIB . The case continues .