A leading Russian military blogger was killed Sunday in an explosion at a cafe in Russia's second-largest city of Saint Petersburg, the interior ministry said.
"One person was killed in the incident. He was military correspondent Vladlen Tatarsky," the ministry said on Telegram.
Investigators later said they had confirmed "an unidentified explosive device exploded in a cafe in central St Petersburg."
"19 people were also injured to varying degrees," they said in a statement.
The TASS news agency quoted a law enforcement source as saying the blast was "caused by an improvised explosive device hidden inside a statue given to Tatarsky as a gift".
Tatarsky, whose real name is Maxim Fomin, has more than 500,000 followers on Telegram and is in favour of Russia's campaign in Ukraine.
The explosion occurred at "Street Food Bar No. 1" in the city centre, with the interior ministry saying police had been called to the scene at 6:13 pm (1513 GMT).
A group called Cyber Front Z, which refers to itself on social media as "Russia's information troops", said it had hired out the cafe for the evening.
{{/usCountry}}A group called Cyber Front Z, which refers to itself on social media as "Russia's information troops", said it had hired out the cafe for the evening.
{{/usCountry}}"There was a terrorist attack. We took certain security measures but unfortunately they were not enough," the group said on Telegram.
"Condolences to everyone who knew the excellent war correspondent and our friend Vladlen Tatarsky," it said.
The 40-year-old Tatarsky came from the Donetsk region in eastern Ukraine, which Russia claims to have annexed and which is currently mostly held by Russian troops.