Sullivan County investigators are trying to piece together the details of the final hours of the 34-year-old man whose body was found in Fort Patrick Henry Lake Wednesday. William Trent of Kingsport was found in the water near the riding stables of Warriors Path State Park. Authorities have been able to locate his vehicle but say there was no indication what might of caused his death. An autopsy will be performed East Tennessee State University Quillen College of Medicine.(CS)