FIFA on Monday sacked deputy general secretary Markus Kattner for financial "breaches" involving secret bonuses worth millions of dollars, according to sources close to an inquiry by the world body.

Kattner's downfall topples another member of ex-president Sepp Blatter's inner circle at soccer's world body.

Kattner, a 45-year-old German-Swiss national, had been acting general secretary after previous general secretary Jerome Valcke was also dismissed for irregularities.