AP Photo/Corey Williams

Cars travel on Wixom Road in Wixom, Mich., Wednesday, Oct. 31, 2012. Officers have begun pulling over and questioning drivers in four Michigan counties in the hopes of catching a man suspected of shooting at other motorists nearly two dozen times over the past two weeks, including one driver who was wounded over the weekend. Officers are searching for anything out of the norm during their traffic stops in Oakland, Livingston, Ingham and Shiawassee counties, where the suspect is believed to have fired on 22 other vehicles since Oct. 16, said Lt. Mike Shaw, of the state police post in Brighton. (AP Photo/Corey Williams) (November 4, 2012)

WIXOM, Mich. (AP) — Authorities say a man wanted as a possible witness to a Michigan shooting spree has stepped forward and talked to investigators.

The man contacted the task force Friday night after police released gas station surveillance photos to the news media. Wixom Police Chief Clarence Goodlein says the man was very cooperative and had no role in the shootings. No name was released.

24 shootings have been reported in four counties in and near the Interstate 96 corridor, from Ingham to Oakland counties. One driver was injured. All but two of the shootings occurred two weeks ago.

Police increased patrols on I-96 for fans attending the Michigan State football game. Some high school bands traveling to Detroit for a competition avoided I-96 Saturday.