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PHILADELPHIA (CBS) — A Southern California man has pleaded not guilty for allegedly murdering a University of Pennsylvania student in January.

Man Struck, Killed By 2 Hit-And-Run Vehicles In Tacony, Police Say

Police say Samuel Woodward murdered 19-year-old Blaze Bernstein, a gay man, in a hate crime. Woodward is accused of stabbing Bernstein to death.

Photo of Blaze Bernstein.

The Penn student was on winter break when he went missing after going to a park with Woodward.

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Prosecutors say DNA evidence links Woodward to the crime.