GRAND HAVEN, MI (WHTC) - The Ottawa County Medical Examiner's Office has confirmed that the body found by marina workers in the Grand River in Grand Haven last Thursday morning was that of Trevor Obrien. The 28-year-old Grand Rapids man had not been seen since February 2 in his hometown, and while no cause of death was immediately determined, investigators don't believe at this point that Obrien was the victim of foul play. The case is being handled by the Grand Rapids Police Department.