EDGEMONT — A 44-year-old man who died Aug. 23 from injuries sustained in an Aug. 3 crash near Edgemont has been identified by authorities.

Preliminary crash information indicates Adan Zavala-Lopez, the driver of a 2011 Yamaha motorcycle, was traveling east on U.S. Highway 18 near mile marker 20. The motorcycle left the roadway to the right and Zavala-Lopez became separated from the motorcycle in the south ditch.

Zavala-Lopez sustained serious, life-threatening injuries and was taken to a Rapid City hospital. He died from his injuries on Aug. 23.

The South Dakota Highway Patrol is investigating the crash.