Fifa president Sepp Blatter has been questioned by Swiss federal police over alleged financial corruption.

The attorney general's office in Switzerland said it has opened criminal proceedings against Mr Blatter over possible criminal mismanagement and misappropriation of Fifa money.

The Swiss federal office said Mr Blatter was interrogated after chairing a meeting of Fifa's executive committee on Friday.

Fifa vice-president Michel Platini was questioned as a witness over a suspected "disloyal payment" of two million Swiss francs he allegedly received from Mr Blatter in February 2011, Swiss authorities said.