A 19-year-old man was accused of striking someone in the back of the head with a knife Tuesday night, city police said.

Aaron M. Demko, of Butler, was charged Wednesday with felony aggravated assault following the incident.

Police said they responded at 7 p.m. on Tuesday, Feb. 28 for a disturbance in the 400 block of West New Castle Street.

Demko was located walking the middle of the street on Bell Drive in Pullman Plaza, according to documents. He was taken into custody and is being held in Butler County Jail in lieu of $100,000 bail.

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