Kreider is accused of stabbing to death Kevin Haines and his parents Thomas and Lisa Haines inside their suburban home in May 2007.
Authorities have said Kevin Haines was the intended target. Kreider was arrested after his father informed police that his son confessed to the killings.
The Haines' daughter, Maggie, was also home at the time but was not attacked.
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Information from: Intelligencer Journal, http://www.lancasteronline.com/pages/paper/sundaynews/
