At least 10 people have died in train car blasts in the subway system in St. Petersburg, Russia, and an unknown number of others are injured, according to state news agency TASS.
There were two separate explosions, one taking place at Sennaya Ploshad station and the other at the Technological Institute station, state news agency RIA Novosti reported.
President Vladimir Putin’s press secretary told Russian news agency Interfax that Putin has been informed of this morning's explosions on the St. Petersburg metro.
Putin is in St. Petersburg speaking at a forum.
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“Unfortunately, we have to begin our meeting with this tragic event,” Putin said. “The causes are not yet clear, and so it’s still early to talk about that, the investigation will show. But, naturally, we always examine all versions, ordinary and criminal, above all incidents of a terrorist character.”
Pictures have also emerged online of thick clouds of smoke at the metro station, as well as what appeared to be a mangled train car.
Passengers appeared to be fleeing the smoke-filled station.
This is a breaking story. Please check back for updates.
Information from ABC News was used in this report.
