One person has died and at least six people have been injured in a blast in a cafe in St Petersburg, Russia, according to state media.
Well-known Russian military blogger Vladlen Tatarsky is believed to have died in the explosion.
The deceased is believed to be a well-known Russian military blogger, Vladlen Tatarsky, the RIA news agency reported, citing a source.
This is a developing story. Check back for updates.
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