SIOUX FALLS, SD -
The South Dakota Highway Patrol is still piecing together what caused the crash on Interstate 29 that killed a man.
On Saturday, 27-year-old Jeremy Johnson was driving north and veered into the southbound lanes.
Authorities say that's when another vehicle hit Johnson's car. Johnson's car was split in half; he was ejected and died from injuries.
The driver and passenger in the other car have non-life threatening injuries.
Highway Patrol Captain Kevin Joffer says officials are performing toxicology tests and will see if Johnson was using his cell phone prior to the crash.
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