JOHANNESBURG (AP) -- A FIFA executive says a terrorist threat has been made on the World Cup.

Secretary general Jerome Valcke commented Friday on an online magazine article that said "how beautiful'' it would be if a bomb exploded at the U.S.-England game June 12 in the South African city of Rustenburg.

Valcke says World Cup organizers are working at the "highest level of security.''

The comments appeared to come from a contributor to a militant online magazine called "Yearners for Paradise,'' not the usual sites used by al-Qaida and other groups to make threats. In the article, the author says he is not a spokesman for al-Qaida.

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