OAKLAND (CBS/AP) — Oakland Mayor Jean Quan and other city officials have begun inspecting damage inside City Hall that was caused by about 50 Occupy protesters who broke in and smashed glass display cases, spray-painted graffiti, and burned the American and California flags.

Saturday’s break-in culminated a day of clashes between protesters and police. Interim Police Chief Howard Jordan said nearly 400 people were arrested on charges ranging from failure to disperse and vandalism.

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At least three officers and one protester were injured.

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Quan said Sunday that Occupy protesters have caused an estimated $2 million in vandalism since October. She said the cost to the city related to the Occupy Oakland protests is pegged at about $5 million.

KCBS’ Tim Ryan Reports:

The scene around City Hall was mostly quiet Sunday morning. It was unclear whether protesters will mount another large-scale demonstration on Sunday.

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