MOSCOW, July 15. In the morning rush hour, three train cars have derailed in the metro tunnel between the Park Pobedy and Slavyanskiy Bulvar stations. As a result, 21 people have died; over 160 were injured with 139 of them hospitalized.

Train derailment in Moscow metro: images from the site

July 16 has been declared the day of mourning for the victims of the accident in Moscow.

Russia’s President Vladimir Putin expressed condolences to family and friends of the victims.

“Vladimir Putin deeply condoles to the family and friends of the victims and wishes the soonest recovery to those injured in the accident,” presidential spokesperson Dmitry Peskov said in a statement.

Prime Minister Dmitry Medvedev also expressed condolences to the relatives of the victims and instructed to help Moscow cope with the consequences of the accident.