BEIJING -- Foreign Ministry spokesman Qin Gang on Monday said China "strongly" condemned recent terrorist attacks in the Russian city of Volgograd.

At a regular press briefing, Qin said China expressed deep condolences to the victims and sincere sympathy for their families.

At least 10 were killed and 10 more injured early on Monday when an bomb went off in a trolley bus in Volgograd, the second deadly blast in two days in the city.

A female suicide bomber on Sunday blew herself up at a railway station in Volgograd, killing 17 and injuring dozens.

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Xi offers condolences to Russia over blasts

Chinese President Xi Jinping extended condolences to his Russian counterpart Vladimir Putin on Monday over two terror attacks in Russia's southern city of Volgograd, which left dozens of people dead.

In his message, Xi expressed his sympathy and condolences for the heavy casualties caused by the two explosions.

Second blast kills 14 in Russian city

Suicide bomber kills at least 16 at Russian train station

A suicide bomber set off a blast in the entrance hall of a Russian train station on Sunday, investigators said, killing at least 16 people in the second deadly attack within three days as the country prepares to host the Winter Olympics.

Authorities said the attacker detonated a shrapnel-filled bomb in front of a metal detector just inside the main entrance of the station in Volgograd, a busy hub north of the violence-plagued North Caucasus region on Russia's southern fringe.