FIFA and law enforcement agencies are confident they have measures in place to prevent World Cup matches and participating players being targeted by match-fixers. Director of security Ralf Mutschke said a comprehensive strategy had been put in place to ensure all matches are closely monitored by security personnel. Match fixing is a criminal offense in New Zealand and police and government agencies co-operate to identify illegal behavior. Julie Norris, head of Interpol's Integrity in Sport, Capacity Building and Training Program, said New Zealand was among the world leaders in the fight against sports corruption. "The level of cooperation and coordination and information sharing and intelligence sharing is certainly, in my experience, unprecedented," Norris said. [...] a routine medical check detected a blocked ventricle in his heart and Correa had to travel to New York for an operation to remove the obstruction. The treatment was successful and, after being given medical clearance, he returned just in time to join Argentina's qualifying campaign.