[mollynme]

The reporter just referred to "the young man" who lived there. The neighbor was only speaking of the one person (and his "strict" parents.) No one else was mentioned as living there.
The police are supposed to give out more information in about an hour.

[Rte66]

Ah, I found some more on a newer thread:

http://www.freerepublic.com/focus/f-news/1937260/posts

” ... A woman who said she is related to the family living at the home said she has a 24-year-old brother who lives there. He is a computer-programming student at a community college. Another brother is attending college in Oklahoma, she said. ...”

I also see in a post above there is a little more about the family.