According to the Beeb:
Deadly explosions on Moscow Metro system- - - - - - - - -
At least 25 people are reported to have been killed in an explosion on the Metro system in central Moscow, with a second blast coming shortly afterwards.
The first blast happened at the city’s central Lubyanka station, reports quoting security sources said.
A second explosion happened at the Park Kultury station, Russian news agency Tass reported.
Ten people were injured in the first blast, Tass said, quoting the emergencies ministry.
The number of casualties at the second blast is not yet clear.
A ministry spokeswoman said that at Lubyanka 14 people were killed in the train and 11 on the platform.
“The blast hit the second carriage of a metro train that stopped at Lubyanka, at 0756 (0356 GMT),” Irina Andrianova said.
“There was no fire. Rescuers of the Moscow emergencies department and firefighters are now working at the site,” she added.
The headquarters of the Russian Federal Security Service (FSB), is located just above the station.
The second blast came about 40 minutes later, at 0838 (0438 GMT), and there “are killed and injured”, security sources said.