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Gary McCullough was arrested June 24 after being pulled over by police near the site of the G20 summit. ((Geoff Robins/AFP/Getty Images))

An Ontario man has been acquitted of a weapons offence charge more than a year after police found a crossbow and a chainsaw in his car near the site of last year's G20 summit in Toronto.

Gary McCullough, 53, of Haliburton County, was acquitted Wednesday of one count of possessing a weapon for a dangerous purpose.

Ontario provincial court justice David Fairgrieve said in his ruling the Crown failed to prove McCullough intended to use the crossbow. But Fairgrieve ordered a three-year peace bond for McCullough that requires him to seek mental health treatment and prohibits him from owning a weapon of any sort.

A court-ordered psychiatric assessment found McCullough suffers from symptoms of both schizophrenia and manic depression. McCullough resists the label, but his father Kem McCullough described him as having paranoid schizophrenia.

Outside the courtroom in Toronto, McCullough told CBC News he's happy with the acquittal.

He was arrested in downtown Toronto on June 24, two days before world leaders were to hold a summit several blocks away.

Police said they pulled over McCullough while he was driving a Hyundai Elantra because of an unusual metal container attached to the roof. A search of the container and car turned up fuel canisters, a chainsaw, a sledgehammer, a hatchet and a crossbow.

Though officers acknowledged he had nothing to do with the G20, McCullough was charged with possessing a weapon for a dangerous purpose.

Earlier this summer, Fairgrieve ruled that police violated McCullough's rights when they questioned him about what they found in his car. McCullough did not have a lawyer present, but he should have, the judge ruled.

McCullough has said in the past that he simply made the mistake of driving by to take a look at the elaborate security.

McCullough was held in custody for nearly 5½ months, before he was released on bail on Dec. 6.