One person has died after an overnight motorcycle crash south of Portland.

According to Michigan State Police, the crash occurred just before 3:15 a.m. on Monday, May 15, on Charlotte Highway near the corner of E. Musgrove Highway. That's at the southern edge of the Portland State Game Area.

A passerby noticed the crashed bike and called 911. The driver, 39-year-old Clinton Lueth, was pronounced dead at the scene.

MSP believes Lueth was traveling northbound on Charlotte Highway when he lost control around a curve, overturned and hit a sign. He was not wearing a helmet at the time and alcohol is believed to be a factor in the crash.

Police also say Lueth was unlicensed and did not have a cycle endorsement.

The crash remains under investigation.

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Matt Gard is the Senior Producer of the 13 Morning News. If you have a story idea, you can contact him on Twitter, @mgard_wzzm13 or by e-mail,