Police are investigating reports that a car window was shot out while its owner was driving on U.S. Highway 71 near 59th Street, but they don't know if it's connected to the other recent highway shootings.

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Police investigating a possible highway shooting on 71 Highway at 59th Street said they could not find bullets or holes inside the van. A person reported having a window of their van shot out, then drove back to their home and called police. The witnesses said they heard what sounded like two gunshots and noticed the rear passenger-side window had been broken out.They said they drove home, cleaned up the glass and then called police.Investigators said they couldn't find anyone in the area of the shooting and they couldn't find any sign of a bullet inside the van, only one small piece of broken glass. They said there was no indication that there had been a shooting.Earlier in the day, police said more than 100 tips have come in about the recent pattern of shootings on Kansas City-area highways, and investigators still consider the case a high priority.Investigators have positively linked 12 incidents from Kansas City, Mo., Blue Springs, Lee's Summit and Leawood to the case. Three people have been struck, but none had life-threatening injuries.Patrols have been heavy in the areas where the shootings have been reported. The Bureau of Alcohol, Tobacco, Firearms and Explosives and the FBI have also joined the search for whoever is responsible.Drivers said the police presence is reassuring but they want the shootings to end."It concerns me a lot. I'm driving around this town all the time. My family is, my kids, my grandkids. They've gotta stop these folks," said driver Adolph Briscoe.Drivers said the extra patrols might even catch someone in the act.A reward of up to $10,000 is available for information that leads to an arrest. Anyone who notices any suspicious activity should contact 911 right away. Anonymous tips can be left via the Crime Stoppers TIPS Hotline at 816-474-8477.