According to KARE-11 in Minneapolis, police were called to the apartment just before 7:30 a.m and Tinsley was down, on the floor, not breathing.
University police say they don't believe there was anything suspicious in the incident, but they are investigating, just to make sure.
You can see more from KARE-11 RIGHT HERE
The 21-year-old Tinsley, from Jacksonville, Florida had been hoping to get a shot in the NFL. He was the #2 tackler on this past years Gopher team.
He did have a couple of brushes with the law while at school, but was well liked and according to teammates and students, was looking forward to the future.
WCCO-TV in Minneapolis with a TV story on Tinsley's death: