Embattled FIFA chief Sepp Blatter is suspected of "disloyal payment" to UEFA head Michel Platini, who had hoped to succeed him, the office of Switzerland's attorney general said Friday.

"Mr. Joseph Blatter is suspected of a disloyal payment of 2.0 million Swiss francs ($2.04 million, 1.8 million euros) to Michel Platini, President of Union of European Football Associations (UEFA), at the expense of FIFA," it said in a statement, adding that the payment had been executed in February 2011, and had allegedly been made "for work performed between January 1999 and June 2002."