Ronald Tammen was a sophomore at Miami University, majoring in business administration. He was last around 8:30 p.m. by the dorm mom at Fisher Hall who had exchaneged his dirty sheets. His roommate returned to the room later that evening. The radio was playing on Tammen's desk with light on, a psychology book open and his personal belongings (including car keys and wallet) were left behind. His 1939 Chevrolet was in its usual parking place. Later, it was learned that $200 remained in his bank account.There were no signs of a struggle in his room and no ransom note or demands followed. A search of a 25-square-mile area around the campus by 400 university students and volunteers provided no clues. He was a native of Maple Heights, Ohio. He was a graduate of Maple Heights High School in suburban Cleveland, a varsity wrestler, a member of Delta Tau Delta fraternity and played bass in a local dance band.He was enrolled in the U.S. Navy ROTC program at the time.