There's more information tonight about what possibly led up to this murder.

A person who knows Eric Hainstock sat down with NBC 15 to tell us about the teen's troubled childhood.

Because of the sensitivity of this issue, she did not want to be identified. She has had frequent contact with Hainstock in the past.

She described Hainstock as an outsider.

Saying kids often picked on him calling him a homosexual.

She also described Hainstock as a poor kid, who was often dirty. Hainstock does have a long history of in school suspensions.

She says there have been incidents were he has not only attacked students but also teachers.

The woman says, "He could be a very sweet and giving kid, but when he got angry he was a scary child to be around, he had that sort of look where you just want to back up. To some extent, I think the system did fail him because of the way that he acted out I think he was sort of crying out for more help."