MOSCOW - Two explosions hit the Moscow subway system on Monday morning, killing at least 37 people, Russian news agencies reported.

A fire-fighter and Interior Ministry officers work near the entrance of the Lubyanka metro station in Moscow March 29, 2010. [Agencies]?

The Emergency Situations Ministry said the blast which struck the Lubyanka station at 7:56 am (0356 GMT) had killed 25 people and injured at least 10 others, the Itar-Tass news agency reported.

A spokesperson of the ministry told Itar-Tass that 14 people died in the wagon of the train and 11 on the platform.

Shortly afterwards, an explosion hit another subway station. Itar-Tass said at least 12 people were killed and 12 others injured in the second blast that hit the Cultural Park subway station at 8:40 am. (0440 GMT)

Prosecutors have opened a criminal probe into possible acts of "terrorism" after the deadly blasts.

On February 6, 2004, at least 41 were killed and more than 130 others injured when a blast ripped through a crowded metro car in the Russian capital during the morning rush hour.