FILE - In this Wednesday, June 1, 2011 file photo,  

FILE -  In this Wednesday, June 1, 2011 file photo,  referee Ibrahim Chaibou, red top,  is surrounded by Argentina soccer players after he awarded a penalty against them during an international friendly soccer match with Nigeria Super eagles at the National stadium in  Abuja, Nigeria. Chaibou has refereed at five international games that a top betting monitor has flagged as suspicious, including this Nigeria-Argentina game. (AP Photo/Sunday Alamba, file)
Associated Press
FILE - In this Wednesday, June 1, 2011 file photo, referee Ibrahim Chaibou, red top, is surrounded by Argentina soccer players after he awarded a penalty against them during an international friendly soccer match with Nigeria Super eagles at the National stadium in Abuja, Nigeria. Chaibou has refereed at five international games that a top betting monitor has flagged as suspicious, including this Nigeria-Argentina game. (AP Photo/Sunday Alamba, file)
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