Questions mounted Thursday about why an Oklahoma sex offender who authorities say shot to death his wife, her three children and their two friends and then killed himself was freed from prison early, despite facing new sex charges in a separate case.

Those questions include how he was released on good behavior when the new charges were for solicited nude images from a teen while he was imprisoned, why was he released on $25,000 bond, and how was a man convicted of raping a teenager able to live with teenage girls?

If things had gone differently in the Oklahoma criminal justice system, family m...