TRAVERSE CITY, Mich. (AP) - A 71-year-old man who once was charged with robbing three northern Michigan banks has been convicted in an unrelated stun gun possession case. The Traverse City Record-Eagle reports a Grand Traverse County jury on Wednesday found William Francis Minore guilty of two felony counts. Minore testified on his own behalf, saying he bought the weapons at a flea market. He contends, however, that the case was only brought because authorities couldn't make bank robbery charges stick. He faces up to four years in prison when sentenced Aug. 10. The robberies occurred in 2015 and 2016 in Empire and Lake Ann, small towns west of Traverse City. Authorities alleged that Minore distracted police with phony reports of crimes, including a school shooting. A judge dismissed those charges earlier this year. --- Information from: Traverse City Record-Eagle, http://www.record-eagle.com