OAKLAND (CBS SF) — Police arrested at least two Occupy Oakland protesters at Frank Ogawa Plaza in Oakland late Thursday night, according to police.

At approximately 8:35 p.m., near the intersection of Eighth Street and Broadway, a protester threw a rock that struck a nearby police officer in the chest. The protester rejoined the crowd and the officer was not injured, police said.

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At about 9:10 p.m., officers located a subject in connection with the incident and arrested 25-year-old Alexander Loutsis, of Stockton on probable cause for felony battery on a peace officer.

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KCBS’ Chris Filippi Reports:

A second protester was arrested for obstructing an officer and for possession of a cocaine-based narcotic at about 11 p.m., police said.

Police had not released the identity of the second protester arrested Thursday night.

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