World cup stadiums are safe - Blatter

"The security of the stadia is a matter of the German government, in this case the minister of the interior," FIFA president said.

"It was not the duty of this organisation to go into the security of stadia," he said, referring to the Stiftung Warentest consumer group which this month released a controversial report on the host stadiums.

It said four stadiums in particular (Kaiserslautern, Leipzig, Gelsenkirchen and Berlin) had flaws. Blatter said steps were already being taken to address issues previously identified by FIFA at several venues, such as problems closing the roof at the Frankfurt stadium.

"We have no worries because we have identified already a certain time ago that three or four stadia had some problems," he said, adding these were being ironed out in time for a final FIFA inspection before the World Cup starts on June 9.