A 30-year-old man was critically injured Wednesday in a crash that closed all southbound lanes of I-75 for two hours in Cobb County, according to Marietta police.

The three-vehicle incident was reported around 10 a.m. just past the Canton Road Connector interchange, Officer Chuck McPhilamy said.

Investigators said two vehicles, a 2019 Subaru Impreza and a 2015 Chevrolet Equinox, were involved in a minor crash and pulled to the left shoulder. At the same time, Johnathan Layson, 30, of Canton, was driving a 2000 Ford Explorer in the far left lane.

“For reasons unknown, Lawson left his lane of travel and drove onto the left-hand shoulder,” McPhilamy said in a news release.

The Explorer hit the Equinox, pushing it into the Impreza. The impact pushed the Explorer across all lanes of travel before it struck the right-hand barrier and came to a rest in the opposite shoulder, police said.

Layson sustained life-threatening injuries and was taken to Wellstar Kennestone Hospital, where he remained in critical condition Wednesday afternoon, police said. A second driver suffered injuries that were not considered life-threatening, police said.

The busy interstate was jammed during the investigation and was reopened just after noon.

Anyone with information regarding the crash is asked to contact Officer J. Henderson at 770-794-5384.

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