One man is dead after a single-vehicle rollover crash on Interstate 84 Monday morning.

Idaho State Police says 28-year-old Andrew Castello of Eden was eastbound on I-84 at mile post 207 in Minidoka County when for unknown reasons his 2006 Chevy Cobalt went off the left shoulder. Castello steered the car back on the highway but overcorrected, causing the car to overturn in the median.

Police says Castello was not wearing a seat belt and died at the scene.

Alcohol and weather are not believed to be factors in the crash.

The crash is still under investigation.