BEIJING, Dec. 30 -- 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.