According to him, the special commission on the investigation of the tragedy in the Aqua Park in Moscow's southwest formed by the Moscow government came to this conclusion.
It has no other versions, Mr. Resin said.
A special commission formed by the Prosecutor General's Office is also involved in the investigation, Vladimir Resin added. It will make the final conclusions, he noted.
The roof of Transvaal Park collapsed on February 14, 2004 killing 28 people. Over 100 people were injured.
Moscow Mayor Yuri Luzhkov denied the terrorist act version at once.
Meanwhile, architects resolutely deny their guilt. They are convinced it was a terrorist act.