SARAJEVO, Feb. 10 (Xinhua) -- A huge explosion was heard in central Sarajevo Monday night, and police said there were no injuries.

　　A local police press officer told Xinhua the explosion occurred at the entrance of the ice hall at the Skenderija Plateau. No one was injured, and several shops were damaged, he added.

　　It was still not clear what kind of explosive device was used, he added.

　　Sarajevo was rocked by violent clashes on Friday between protesters and police, with the Presidential Building set on fire. Protest have since resumed on Sunday, but with no clashes.