That's because the person fired has not been charged with a crime. Nor does it seem anyone even suspects him of a crime. Strutt, who this article is about, was the executive director of the lottery. Tipton, the security director, has been convicted of fraud. Tipton stole millions. There seems to be no evidence that Strutt stole anything. (If there was, I assume they would have also charged him.)

This is a typical "heads will roll" situation. Strutt was the leader, a serious crime happened during his watch, and he's being replaced because of it.