1 teenager killed, 1 seriously injured in crash on I-75 in Cobb County

A teenager has died and another is in serious condition after they were both ejected during a crash involving a tractor-trailer along Interstate 75 in Cobb County

According to Cobb County officials, the southbound lanes of I-75 between Delk and Windy Hill were closed around 8:30 p.m. due to the crash.

Officials tell FOX 5 that the two 18-year-olds were stopped in a silver 2003 Toyota Camry on the fourth lane from the left in the interstate. A red 2016 Kenworth T680 driver by 56-year-old Florida resident Sean Fletcher crashed into the stopped Toyota's rear end - pushing across multiple lanes of traffic.

Investigators say the two 18-year-olds were both ejected in the crash. The passenger died at the scene. The driver has been transported to Wellstar Kennestone with serious injuries. Fletcher was also taken to Wellstar Kennestone after complaining of a minor injury.

Officials believe a mechanical issue may have been involved in the crash.

If you have any information that could help with the investigation, please call 770-499-3987.