A truck driver was killed on Sunday after falling off a bridge in Sioux Falls, South Dakota.

According to police reports, the truck was traveling on northbound Interstate 229 when it lost control and hit a guardrail on the Minnesota bridge around 4:30 a.m.

The 2017 International truck broke through the guardrail and fell off the overpass, landing on a 2015 Chrysler 300 that was traveling below on Minnesota Avenue.

A portion of Interstate 229 and Minnesota Avenue were closed near the crash scene.

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The 43-year-old truck driver was killed in the crash. The 23-year-old Chrysler 300 driver suffered minor injuries as was taken to a local hospital. The names of the individuals involved have not been released.

It’s unclear how the truck driver lost control on 229. The accident remains under investigation.