A semi-trailer driver died early Saturday morning after he struck a disabled box truck and lost control of his vehicle just south of Ottawa.

The accident began at 5:09 a.m. when the box truck, traveling southbound on Interstate 35, left the road and overturned while trying to steer itself back on, according to the Kansas Highway Patrol’s report on the crash. The driver, Alfred Williams, 30, of Jonesboro, Ga., had climbed out of the truck, onto the top of its cab.

Then the semi-trailer, driven by Sukhdarshan Sidhu, 63, of Grand Island, N.Y., struck the box truck, according to the report.

Williams was thrown from the top of the box truck, according to the report. Sidhu’s semi-trailer then struck a guardrail and jackknifed, coming to rest with part of the vehicle in the grassy median and part blocking the northbound lanes.

Sidhu was pronounced dead on the scene, according to the report. Williams was taken to Ransom Memorial Hospital in Ottawa with a possible injury.