A fourth-generation Southern Methodist University student arrested in September on charges he sexually assaulted another male student on campus has been indicted.
On Friday he was indicted by a Dallas County grand jury on a charge of alleged sexual assault by mouth.
According to police, the alleged victim said he was attacked twice – once in a campus parking garage and again near the Sigma Phi Epsilon fraternity, where Mahaffey is a member.
An affidavit of probable cause filed by an SMU police investigator provides graphic details.
Mahaffey forced the other student to perform a sexual act on him, the officer said.
"Victim stated ‘NO’ and ‘STOP’ several times but felt intimidated and physically forced into compliance," the affidavit said.
SMU administrators issued a campus crime alert after the alleged attacks.
Mahaffey told the victim "you better not tell a soul" and later admitted the crime in a phone call recorded by police, according to a court documents released in September.
Mahaffey, of Springfield, Missouri, was a Hunt scholar, a student senator, a scholarship committee chairman, and an officer on SMU's Inter-fraternity council, according to the university website.
According to a 2011 article in SMU's student newspaper, the Daily Campus, his great-great grandfather was a member of SMU's founding committee and one of its first professors and his grandmother, father and two aunts also were students.
Mahaffey was released from the Dallas County jail on $25,000 bond.