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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A split set up this Sunday
Four Britons are dead after a serious crash in Al Khalas, a settlement roughly 30 miles north of the holy site of Mecca.
So-called Islamic State said they were behind the attack that targeted people receiving their national identification cards.