The coast guard says there don't appear to be any survivors in the crash of a plane carrying six members of an organ transplant team.

Captain Bruce Jones says human remains have been found in Lake Michigan, where the plane went down Monday shortly after the pilot signaled an emergency.

Two surgeons, two donor specialists and two pilots were aboard the plane, which took off from Milwaukee and was headed to an airport near Detroit. The University of Michigan medical team was bringing organs for transplant to a patient in Michigan.

Within five minutes of its departure, the pilot declared an emergency and requested a return to Mitchell international airport. But the plane dropped off radar screens just after the pilot made the request and the coast guard was contacted.