Vegeta doesn't seem like the type, either.

It seems so...I have my own suspicions regarding one of them. [ It's easy to infer which, but he is not naming any names. ] It's unfortunate we don't have any more evidence.

Although, I do believe the subject about sins has been brought up once. I cannot think of this being a 'Lust/Chastity' kind of murder. It seems more about Pride.