Madonna concert 'endangers thousands'

Madonna's concert in Moscow next week could put thousands of lives in danger, according to the architect who designed the venue.

The singer is due to play the Luzhniki Stadium next Tuesday, but the building may not stand the volume of her music

Nodar Kancheli warns: "The stadium could collapse if audio frequency resonates with the vibration frequency of the building. The sound waves could damage the structure."

Another of Kancheli's designs, the Transvaal Water Park Stadium, collapsed in 2004, killing 28 people.