brought a pocket knife to work. penny killmore whose daughter goes to school with the boy describes him as being distant, even glassy eyed at times, very different from his bubbly 8-year-old sister. >> i was devastated for the family and just for that little boy. my heartached for him. something inside him, he has to be so angry and mad to do something like that. >> and this is just an awful story to imagine. i know the family called a press conference for tomorrow. do you have any sense about why they would call it now? what they're going to be saying? >> we only know what we've been told. we know it's going to be a prepared statement, not just to the press but to the community as well. we know it's being coordinated through the sheriff's office. it's going to be right here in this parking lot where i'm standing. we don't know who's going to be involved. it is going to be the biological mother, stepmother and father? independly, we did hear from the stepmother through a social