MEXICO CITY - (EFE) -- Though his nation's relations with Cuba have soured drastically of late, Mexican President Vicente Fox said Friday that his government will not take part in a new U.S. program designed to help Cubans speed an end to the communist regime.

Speaking in the Mexican city of Culiacan, Fox said his country's policy was based on noninterference in the internal affairs of other nations.

''We reject all interference in this case,'' Fox said, referring to the report of the White House's Commission for Assistance to a Free Cuba suggesting measures that would enable the United States to hasten a transition to democracy on the island.

''Thus, Mexico will in no way take part in this proposal that has been made against Cuban sovereignty, and neither will we accept interference in that country's affairs by any other nation,'' Fox said.