Investigators believe a driver changed lanes improperly Tuesday afternoon and caused a 10-vehicle wreck that closed I-75 in Cobb County for three hours.

The crash happened shortly after 2 p.m., closing all southbound lanes at the Windy Hill Road exit until about 5 p.m., according to the Georgia State Patrol. Three commercial vehicles and seven passenger vehicles were involved in the pileup, a GSP spokesperson said. Photos from the Georgia Department of Transportation showed a tractor-trailer on its side on the interstate.

Three people were injured and taken to Wellstar Kennestone Hospital. Their injuries were not considered life-threatening, the GSP said.

The names of those involved in the crash were not released. The wreck remains under investigation and no charges have been filed.

— Please return to The Atlanta Journal-Constitution for updates.