MOSCOW - As many as 21 people may be trapped under rubble after a university building in the Russian city of St. Petersburg partially collapsed on Saturday, Sputnik news agency quoted a spokesperson for the local administration as saying.

The collapse started from the ceiling on the top floor, the spokesperson added.

Tass news agency reported that the five-story building collapsed from the fifth to second floors, citing a source from the emergencies ministry.

At least 60 people had been reportedly evacuated from the scene.

The emergencies services are currently working at the site of the accident.