(CNN) A former Georgia police officer was found not guilty of murder Monday more than four years after he killed a naked, unarmed black man who was mentally ill.

A jury in DeKalb County found Robert "Chip" Olsen guilty of aggravated assault, making a false statement, and two counts of violation of oath, but acquitted him on two felony murder charges.

Olsen faces up to 35 years in prison and is due to be sentenced November 1. Judge Latisha Dear Jackson said he can remain out on an $80,000 bond until then, though he will have an ankle monitor and be subject to a curfew.

Olsen was charged with killing Anthony Hill, a 26-year-old Afghanistan war veteran, in March 2015. Prior to the shooting, someone in his neighborhood called police to report a man "acting deranged, knocking on doors, and crawling around on the ground naked," then-DeKalb County Police Chief Cedric Alexander said afterward.

Olsen was dispatched and "when (Hill) saw the officer, he charged, running at the officer. The officer called him to stop while stepping backwards, drew his weapon and fired two shots," Alexander said.

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