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Daniel Dorson, 19, waits for his plea and sentencing hearing to begin Tuesday in Multnomah County Circuit Court.

(Aimee Green/The Oregonian)

Daniel Dorson

The 18-year-old man who allegedly

in downtown Portland is scheduled to plead and be sentenced to prison Tuesday morning.

Police tracked down Daniel Dorson and

in Northern California -- three months after the July attack. Dorson, now 19, was charged with second-degree assault.

Witnesses said the employee, Larry Allen, asked a group of street youth to move so he could hose off the sidewalk, but they said it was public property and they didn't have to. Shortly after, Allen was struck on the head and left bleeding on the sidewalk, with a gash next to his eye.

Allen also had scratches and cuts on his arms and may have lost consciousness for about 20 seconds.

The attack stirred outrage in the community, because of its vicious nature.

Tuesday at about 9:30 a.m., a shackled Dorson walked into the Multnomah County Circuit courtroom of Judge Youlee You. He is expected to plead and be sentenced shortly.

Check back on OregonLive.com for details about the plea and sentencing.