Twenty-five people have been killed after the roof of a supermarket collapsed in the Latvian capital, Riga, Latvia's media reported.

Earlier, 21 victims of the roof collapse were reported.

An ambulance service spokeswoman told the website she did not rule out that the death toll from the accident might grow further.

It is unclear how many people remain trapped under rubble, she said.

"The numbers from ten to 30 have been given," the website said.

Three rescuers are among those dead, according to the Latvian Interior Ministry's spokesperson.

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