The 2013 plea agreement former FIFA executive Chuck Blazer struck with U.S. prosecutors was unsealed by a federal judge on Monday, revealing the ex-soccer official went undercover to provide authorities with information for nearly two years while still a member of the executive committee. As early as December 2011, Blazer agreed to secretly provide documents, disclose information to prosecutors and testify at trial. Blazer, the former general secretary of CONCACAF, or soccer's governing body in North, Central America and the Caribbean, agreed to pay back taxes on $11 million in unreported income from 2005 to 2010 and to file tax returns for 2005 to 2013. The 70-year-old was also asked to forfeit $1.9 million in connection to bribery and kickback schemes. Blazer was one of four individuals who secretly pleaded guilty and provided prosecutors with information that led to the arrests of 14 soccer and marketing executives earlier this month.