State troopers are investigating a report of a broken window along Interstate 17 Monday morning.
Arizona Department of Public Safety spokesman Tim Case said troopers are investigating a "broken window call" near I-17 and Bethany Home Road, but did not provide any additional information.
DPS said there have been no confirmed shooting incidents along Valley freeways since last Thursday.
Three teenagers were arrested Sunday for allegedly flinging rocks at vehicles using a slingshot. Officials deemed them "copycats" and said they're not related to the larger freeway shootings investigation.
Last week, troopers detained Oscar de la Torrez Munoz in connection to the investigation, but referred to him as a "person of interest" and not a suspect. He was booked into jail on an unrelated marijuana charge.