(KCEN) -- A fourth-generation SMU student is now banned from campus after admitting to sexually assaulting another male student, then telling the victim, "You better not tell a soul."
Nineteen-year-old John Mahaffey is also suspended from the Sigma Phi Epsilon fraternity as the investigation continues.
The incident happened late Saturday night.
Mahaffey forced the other student to perform a sexual act on him according to police.
In a recorded phone call he admitted to the sexual assault.
Mahaffey was taken to jail, then released on $25,000 bond.