Blatter told German newspaper Welt am Sonntag that "there were two political interventions" from ex-French president Nicolas Sarkozy and German counterpart Christian Wulff before the decision was taken to award the tournaments in December 2010.
Blatter said: "Messrs Sarkozy and Wulff tried to influence their voting representatives. That's why we now have a World Cup in Qatar. Those who decided it should take responsibility for it."
The FIFA presidents suggests that the German football federation received a recommendation from Wulff "to vote for Qatar out of economic interests."
Blatter said the decision "wasn't my priority."
