An explosion in a metro station in Russia's second largest city of St Petersburg on Monday killed and injured several people, according to media reports.
The state-run news agency TASS said preliminary reports indicated that 10 people have died. Another agency, RIA Novosti, said there seemed to have been explosions at two metro stations, a report confirmed by emergency services.
Life News, a news outlet with close ties to Russia's security services, showed pictures of train doors that had been blown out, and people lying injured on the station platform. Another local media outlet, Fontanka said three metro stations had been closed.
Interfax news agency put the number of wounded at 20, and confirmed a death toll of around 10.
News agencies quoted Kremlin spokesman Dmitry Peskov as saying that President Vladimir Putin had been informed about the explosion. Putin is expected to hold talks with the Belarusian president, Alexander Lukashenko, later in the day.
(This is a developing story. The article was first published on DW. You can read the original article here.)