Aerial footage of building where Prague blast occurred

Footage of the building and surrounding area affected by a powerful blast in the Czech capital Prague, which injured up to 40 people.

It is not certain what caused the explosion but a police spokesman has said it is likely to be natural gas.

Emergency workers are searching the building for any people buried under the rubble.

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Dozens injured in Prague blast

A powerful explosion has damaged a building in the centre of the Czech capital, Prague, leaving dozens injured and some buried in rubble, according to reports.