Nathan Paul Bahner of Mercer Island died last week from "asphyxia due to fresh water drowning" and , the King County Medical Examiner's Office concluded Thursday after an autopsy earlier this week.
A spokesman for the office said he had no further details about the autopsy on Bahner, who died Friday, Aug. 10, in a wakeboarding accident on Lake Washington.
Information from the medical examiner's office did not explain how Bahner, 33, came to drown in while being towed behind a boat between Seward Park and Mercer Island. For instance, the spokesman did not know whether or not Bahner was wearing a helmet or a life jacket, or whether or not Bahner was attempting a aerobatic flip, as other media outlets have suggested.
Bahner, a married father of three children, worked as manager of locally-owned LeClercq Marine Construction, and managed two Seattle marinas owned by his father-in-law, , . A in his honor and a memorial service will be held tomorrow, Aug. 17 at 4 p.m. at the .
Seattle police have said they believed the death was an accidental, but declined repeated requests for further details on the investigation conducted by a traffic collision investigation team.
The boat's operator was arrested at the scene on suspicion of boating under the influence, but was later released pending further investigation. No charges have been filed.
Witnesses told Mercer Island Patch that Bahner was pulled immediately from the water following the accident around 6 p.m. on Aug. 10. The boat docked at a residential pier on the 7400 block of West Mercer Way and the boat operator and a friend performed CPR, but neither they nor a ambulance crew could revive him.
Seattle Police spokesman Sgt. Sean Whitcomb said the investigation could take several weeks, if not months, to complete.
"This is a very lengthy, very meticulous investigative process," he said. "There's no such thing as a speedy resolution there."
Whitcomb compared the investigation to the 2008 death of Bellevue teacher Heather DeHart, who was killed when a boat operated by a Mercer Island teen accidentially collided with her vessel. That collision investigation took months to complete, he said.