Sniffer dogs searching a building after a strong blast in central Prague have not yet found anyone at the scene.
Earlier, a fire services spokesman said that some people could be trapped under the rubble.
Two people are believed to be missing, but they may have left before the explosion, Czech newspaper Ceskenoviny reports, citing a police spokesman.
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A widespread frost across the UK as temperatures fall below freezing under clear skies.
After a vote tainted by reports of ballot-box stuffing and forced voting, Putin said Russia was ready to 'cooperate' with Britain.
Largely dry elsewhere tonight with a widespread frost and icy stretches