 "10 killed, 50 injured, 7 stations shut down after St Petersburg metro blasts (Image:Xinhua News?)")
A blast hit the metro system of Russia's second city Saint Petersburg on Monday, authorities said, with news agencies quoting security sources as saying that about 11 people have been killed.
"The Saint Petersburg prosecutor's office has begun to investigate the blast in a train carriage" at the Technological Institute metro station's platform, the prosecutors' statement said.
Hours later, anguish and fear rose again when police found and defused a shrapnel-packed explosive device at another St. Petersburg station.
A source in the emergencies services told Russian news agencies that "around 11 people were killed", according to preliminary information.
The station is a busy hub of the underground network in the centre of Russia's second largest city.
The Saint Petersburg metro said in a statement carried by Russian news agencies that it has closed two stations, Technological Institute and Sennaya Ploshchad — two neighbouring stations on one line — and is evacuating all passengers.
"Evacuation of passengers is ongoing, there are people injured," it said. "An unidentified object supposedly blew up in a (train) carriage."
President Vladimir Putin, who is holding a meeting near Saint Petersburg in his official Strelna presidential palace, offered "condolences" to those hurt in the blast.
Following the reports, the Moscow metro also announced that it is "taking additional security measures" as required by law in such situations, according to the network's official Twitter account.
#WATCH Scene from the blast site at Tekhnologicheskiy Institut metro station in St Petersburg, Russia; 10 killed and 50 injured. pic.twitter.com/UazXjcVJKM
— ANI (@ANI_news) April 3, 2017
