UPDATE: The victim in the fatal crash has been identified as Tryston V. Patterson, 23.
I-35 was opened up for traffic just after 7:00 a.m.
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I-35 southbound has been shut down due to a single vehicle fatality near the I-635 entrance ramp.
The Kansas Highway Patrol was called to the one vehicle rollover about 3:47 a.m. Saturday.
A silver vehicle with a lone occupant apparently rolled over, killing the driver.
All lanes of I-35 are shut down, and an investigation is underway.
Motorists traveling south on I-35 must exit on 69 highway, or onto I-635.
No other details have yet been released.