I just want some answers. That's what Mark Pierson, the father of the Arapahoe High School gunman, told the Denver Post, Monday, as he and his ex-wife, Barbara, expressed remorse and compassion for the incident involving their son, calling on school officials to be more forthcoming with details about the interactions they had with, 18 year old Karl Pierson, before he walked into the Centennial school Friday afternoon seeking revenge that ended with him shooting and seriously wounding 17-year-old Claire Davis, before fatally shooting himself. Mark Pierson said he and his ex-wife attended multiple disciplinary hearings with school officials earlier this year, and say school officials, including librarian and debate coach Tracy Murphy, the target of thier son's rage, should have to answer questions about their interactions with their son, who was a member of the debate team. Investigators say Karl Pierson had been nursing a grudge against Murphy and had made a verbal threat against him.
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