UPDATE: The man taken by Flight For Life died early Friday morning. Police say neither drugs, alcohol nor speed were factors in the crash. The exact cause is undetermined.

The Menomonee Falls Police and Fire Departments responded to a report of a traffic crash Thursday morning.

The crash happened shortly before 11 a.m. in approximately the West 13800 block of south bound Interstate Highway 41.

The initial investigation reveals that a single motorcycle with two riders struck the median wall.

One of the riders was transported by Flight for Life with life-threatening injuries.

The other rider was transported to a local hospital for treatment of what is believed to be non-life threatening injuries. 

The cause of the crash remains under investigation.

Stay with CBS 58 News for more information on this developing story.