A woman identifying herself as only Leonard's grandmother answered the telephone Sunday at an address listed as his in court records, the Montgomery Advertiser reported.
"I'm just very surprised by all of this," she told the newspaper. "This is not the grandson I know, I can tell you that. I've just been sitting here, can't hardly move, I'm so in shock by it. It just doesn't seem real."
Dawson said he was not aware of any connection between Leonard and the university.
Auburn officials expressed condolences to the victims' families, saying many athletes on the football team were grieving after the deaths of Christian and Phillips.
Former Auburn quarterback Barrett Trotter told ABC 33/40 he was "pretty devastated, pretty shocked just like everyone else at what happened."
"When you have that team, family atmosphere we have at Auburn, anything like that is going to be a real blow to everyone there," he said.
Gene Chizik, Auburn's head football coach, called it "a sad, sad day for everyone associated with the entire Auburn family." Chizik said he was "devastated" by the three deaths, including those of Christian and Phillips, whom he knew personally.
"We have a lot of people on our football team that are hurting right now, and we're going to do everything we can to help them get through this," he said. "We are relieved that Eric Mack, who was also a victim in this incident, is expected to make a full recovery. This is a very trying time for everyone involved, and I would just ask that you lift up the victims and their families in your prayers."
"You don't really know what to do after something like this happens," Trotter told ABC 33/40, "but you have to trust the Lord and believe everything is going to be all right."