A Sterling man has been charged in Whiteside County with aggravated battery of a police officer, accused of throwing a rock at a deputy during his third run-in with law enforcement on the same day. Austin Hey, 30, is accused of that offense after an altercation with police on Wednesday, Whiteside County Sheriff John Booker said. Deputies were again dispatched to the shelter about 12:30 p.m., this time because Hey was reported to be acting strangely. A short time later, deputies observed Hey walking near the Wahl Clipper facility in Sterling while carrying a large rock, according to the release. Hey was taken into custody, transported by EMS for medical evaluation, and charged with aggravated battery to a police officer.