Roof's Parents

Has anyone seen either of Dylann Roof's parents come out and apologize for his murderous rampage? I haven't but if you have, please post it. I find it unusual that parents wouldn't say something about an act of violence like this like so many in the past have done. I mean, they raised this little f'ing loser and put a gun in hands and I haven't heard squat from them. I did hear that the dad and the uncle called in the tip that identified him from the AME video camera. Anybody find their silence a bit odd?