An 18-year-old man from Mancelona has died after swimming near Traverse City's Clinch Park Marina.
Police say Michael Knudson was swimming with a friend near the F dock of the marina when he appeared to be shocked and then disappeared. His friend says he also felt an electric shock but was able to make it back to the dock.
Police are investigating what might have happened to cause the drowning.
UPDATE 5:00 p.m.
Traverse City Manager Ben Bifoss says the investigation is no longer a police investigation. An electrical contractor is trying to figure out what might have caused an electric shock in the water at the marina.
Bifoss says swimming is prohibited in the marina. The dock was closed Tuesday.