GREENSBURG - The WBRZ Investigative Unit has learned new information detailing what may have happened in the moments before a high schooler was shot and killed by his classmate this week.\n\nWatch live newscasts here\n\nChief Inve
GREENSBURG - The WBRZ Investigative Unit has learned new information detailing what may have happened in the moments before a high schooler was shot and killed by his classmate this week.\n\nWatch live newscasts here\n\nChief Inve