Prosecutors have revealed that while Crumbley as spraying bullets inside the Michigan High School, his mother sent him a text saying "Ethan, don't do it."
The Chinese government had earlier said that Nurmemet Yusup had died during a police interrogation after he was arrested on suspicion of sympathizing with a criminal.
On Tuesday, Crumbley and his parents Jennifer and James were called into Oxford High School for a meeting with teachers about his unruly behavior in classroom.
Norris hasn't been heard from since she called her mother, Cheryl Walker, on a stranger's phone on November 5 from San Diego telling her that she had a fight with her boyfriend.