Authorities say a 15-year-old student opened fire at his Michigan high school Tuesday, fatally shooting three students and injuring eight others in an attack that prompted teachers to barricade classrooms and students to send panicked messages to family and friends.



The shooting at Oxford High School in Oxford Township, a tight-knit community in a suburb about 35 miles north of Detroit, unfolded around 1 p.m. when a boy, a sophomore at the school, started shooting a semiautomatic handgun, according to the Oakland County Sheriff’s Office.



“This wound will never go away,” said Oakland County Sheriff Michael Bouchard in a press conference Tuesday night.



The three deceased students are 16-year-old Tate Myre, 14-year-old Hana St. Juliana, and 17-year-old Madisyn Baldwin. Myre died in a patrol car on the way to the hospital, Bouchard said.



"The deputy saw it was such a grievous wound that there was no time to wait," he said.