BERKELEY (CBS SF) — A man being sought for the assault of a conservative activist on the University of California, Berkeley campus last month has been arrested.

A statement from UC Berkeley Public Affairs said a warrant was issued for suspect Zachary Greenberg and UC police arrested him Friday, booking him into jail at 1 p.m.

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Zachary Greenberg (Alameda County Sheriff’s Office)

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A man punches another man at Sproul Plaza on the UC Berkeley campus.

A man punches another man at Sproul Plaza on the UC Berkeley campus. (Arda Erbil)

Greenberg was identified as one of two men who confronted a conservative activist who had set up a table in Sproul Plaza. Hayden Williams, volunteer with conservative group Turning Points USA was displaying signs that read, “Hate Crimes Hoaxes Hurt Real Victims” – a reference to the Jussie Smollett case – and another saying “This is MAGA Country.”

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Greenberg was seen on video landing two punches on Williams – one a glancing blow and another much harder directly on his face.

UC Berkeley police released this photo of a man suspected of injuring a student Tuesday afternoon in Sproul Plaza.

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The incident was recorded by two Cal students with cellphones and video of the encounter has since gone viral.

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Police will formally present the case to the Alameda County District Attorney’s Office for consideration of the filing of criminal charges, the university said.