Russian President, Vladimir Putin, has vowed to punish all those responsible for a roof collapse at a Moscow leisure centre on Saturday that killed at least 25 people.

Rescue workers gave up their hunt for survivors today, as construction teams moved in with clearing equipment to dismantle part of the vast glass-domed roof still dangling dangerously overhead.

The Mayor of Moscow, Yuri Luzhkov, said that up to 13 people were still thought to be under the rubble at the Transvaal Park watersports centre, all almost certainly dead. Sixty-eight people are still in hospital, including 20 children.

The probe launched into the disaster will focus on poor maintenance and structural or architectural faults as possible reasons for why the reinforced concrete and glass roof came crashing down on to families bathing 15m below.

Three companies, a designer, contractor and architects' firm, connected with the construction of the centre have had their construction licences suspended pending the outcome of the investigation.

Following the disaster, state officials vowed tough monitoring of buildings being erected rapidly in a Moscow construction boom.