A task force of local and state police agencies has met to discuss its effort to track down whoever's responsible for 22 reported shootings in four southeastern Michigan counties over three days.
Authorities say no one has been hurt in the shootings Oct. 16 through last Thursday.
After Tuesday's meeting in East Lansing, Ingham County Sheriff Gene Wriggelsworth said more than 70 investigators are working to catch the man who fired on at least 22 vehicles.
Wriggelsworth says it's tough to investigate a "100-mile crime scene."
Most involved cars near Interstate 96, and 10 of them were in Wixom.
Tipsters tell police the gunman appears to be a man in his 30s, and Oakland County Sheriff Bouchard says that tests link seven shootings, believed to involve a 9 millimeter handgun.
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70 Officers Investigate Michigan Roadway Shootings
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