Law enforcement has also become more sophisticated in dealing with child-abuse cases, including refining techniques for interviewing children and using social media to determine whether suspects have established contacts with alleged abuse victims, said Scott Burns, executive director of the National District Attorneys Association.
Last month Dein, who has a network of worldwide contacts, travelled to Nigeria for the Under-17 World Cup - a competition where six Fifa executive members were in attendance - following an invitation from Fifa and Confederation of African Football member Amos Adamu.