Transcript for Arizona Freeway Shootings Rise to at Least 11, Police Say
We get the latest on frightening attacks on drivers in Phoenix. Another shooting on the highway Thursday brings the confirmed total to 11. Schools are rerouting buss to keep students safe and ABC's kayna Whitworth is on the scene in Phoenix. Good morning, kayna. Reporter: Yeah, good morning to you, George. Today this directive that these buses behind me along with buses in three other districts will not be using Arizona highways when they bring kids to school today. The superintendent saying whomever is responsible for these shootings has no regard for human life and these kids are too precious to ignore that kind of behavior. This morning, schools across Phoenix ordering their buses to avoid I-10 and nearby freeways following yet another shooting on the busy roads Thursday. A bullet hole discovered in the side of this truck at 9:40 A.M. I just would rather take the streets than the freeway and just, you know, risk getting shot or something. Reporter: This now the 11th shooting in just 13 days along this eight-mile stretch of highway. Detectives saying they're looking for an experienced shooter and also possible copycats. Would it be possible this person was shooting and driving or was in the passenger seat. At this point I think all scenarios are possible and we're looking at all of them. Whether it's coming from a moving vehicle, multiple people in a moving vehicle or someone off the side of the highway. Reporter: Experts say the best way to catch a shooter is through ballistics. One showing us the way detectives analyze bullet holes. This is the shot coming from in front of the car, broadside or overtaking the car. Reporter: Former FBI agents saying if there's just one shooter they're likely attacking the public as a show of power. So it's also really important to note our FBI expert is also saying that it's highly likely that this shooter is actually using the same highways where these shootings are happening so while it might be inconvenient, George, the superintendent saying these buses won't be back on those highways until an arrest is made. I bet. Thanks, kayna, very much.
This transcript has been automatically generated and may not be 100% accurate.