Authorities say a new test shows that the only gunshot wound previously linked to the suspect in a string of shootings along Michigan's Interstate 96 corridor came from a different gun.
Forty-four-year-old Wixom resident Raulie Casteel faces terrorism and other charges in two-dozen random shootings in a four-county area last October.
Authorities have been including only one injury attack in the shooting spree - the Oct. 27 wounding of Scott Arnold of Delton as he drove on I-96 in Livingston County.
A spokeswoman for Attorney General Bill Schuette said Monday that surgeons recently removed a bullet from Arnold. Joy Yearout tells the Detroit Free Press that tests show it doesn't match Casteel's two guns.
Casteel was never charged in Arnold's shooting and awaits trial in Livingston and Oakland counties.