(Milwaukie, OR) -- An investigation is ongoing into the discovery of human remains in the Willamette River. Police in Milwaukie say a group of You-Tubers was diving in the river at the Jefferson Street boat ramp yesterday when they found the remains inside a car that was pulled from the water. Police say the car is connected to a missing persons case out of Portland from 2008. A medical examiner is working to identify the remains.