An Iowa man has been convicted of a 2013 sexual assault of a woman at a Macomb apartment.

The McDonough County Voice reports that Aaron Zetterlund, of Keokuk, Iowa, was found guilty on Wednesday of criminal sexual assault, a felony that carries a penalty of up to 15 years in prison. Authorities say the assault took place on March 9, 2013, when Zetterlund was 22. A second count was dropped.

Among the witnesses against Zetterlund was Ethan Deyo, who also is from Keokuk, Iowa, and who also was a Western Illinois University student at the time. Deyo said he was present when Zetterlund sent the victim what was characterized by an attorney as "some sort of apology message."

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