More potential problems for Auburn

Inside The Auburn Synthetic Marijuana Scandal (5:28)

ESPN The Magazine senior writer Shaun Assael details his investigation into the Auburn synthetic marijuana scandal. (5:28)

The hits just keep on coming on the Plains.

The latest is a six-month investigation by ESPN The Magazine, which describes an epidemic of synthetic marijuana use on Auburn's 2010 national championship football team and several failed drug tests. The report says the university elected to keep those failed drug tests private and didn't even notify parents.

Because synthetic marijuana was new, Auburn athletic director Jay Jacobs contended in an interview with ESPN The Magazine that it was not yet part of the university's official drug-testing policy and therefore not something coaches could punish students for using.

"We did all we could do to educate our student-athletes until [we] could understand exactly what we're dealing with," Jacobs said. "I think just like the rest of the campus, and the nation, we were trying to figure it out."

Freshman tight end Dakota Mosley failed seven consecutive weekly tests for the drug, but never was punished, according to ESPN The Magazine's report. He was suspended for three months in a separate incident after he tested positive for marijuana. The Arkansas native says he learned he'd failed a sixth test on the same day he was scheduled to meet with NCAA investigators to discuss a probe into potential recruiting violations.

Mosley was one of four former Auburn players charged in the armed robbery of a home. Another one of those players, Mike McNeil, is scheduled to stand trial next week. McNeil was at the center of the allegations laid out in Selena Roberts' report on Wednesday.