The timeline of events leading up to a deadly high school shooting Tuesday in Michigan reveals there were concerns about the teen suspect's behavior before the tragedy that left four dead and seven injured.
원문출처 : https://www.cnn.com/2021/12/02/us/michigan-oxford-high-school-shooting-thursday/index.html
원문출처 : https://www.cnn.com/2021/12/02/us/michigan-oxford-high-school-shooting-thursday/index.html