An 81-year-old Minnesota man living behind a Subway restaurant is accused of shooting the owner of the shop — a man with whom the octogenarian had been feuding for years.

William Piar has been charged with first-degree attempted murder , attempted second-degree murder, first-degree assault and two counts of second-degree assault, according to local reports such as from the Rochester Post Bulletin .

The incident occurred on Wednesday.

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The shooting happened near the 1300 block of North Lakeshore Drive in Lake City, located right along the waterfront of the Mississippi River some 70 miles south of Minneapolis. Piar lived behind the Subway restaurant a

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