A fourth teenager died from his wounds Wednesday after a deadly school shooting in Michigan the day before.
The teenager who died was 17, according to Oakland County Undersheriff Michael McCabe. He was one of the eight people rushed to the hospital Tuesday after a shooter opened fire at a high school in Michigan.
"We regret to announce that Justin Shilling, age 17, passed away at approximately 10 a.m. today at McLaren Oakland Hospital in Pontiac, Michigan," McCabe said in a statement, according to the Detroit News.
MICHIGAN SCHOOL SHOOTING SUSPECT'S GUN PURCHASED BY FATHER FOUR DAYS BEFORE ATTACK, SHERIFF SAYS
The other three fatalities were students at the Oxford High School in Oxford, Michigan. Hanna St. Julian, 14, Tate Myre, 16, and Madisyn Baldwin, 17, were identified as the three other students killed in the shooting. Baldwin was expected to graduate at the end of the year and had been accepted to several colleges.
Six other students remain injured and in the hospital from the shooting, including a teenage girl in critical condition, on a ventilator with wounds to her chest and neck. One other student is in critical condition and another is in "serious" condition. A teacher was also grazed with a bullet but has since been discharged from the hospital.
The shooting lasted for five minutes, with 15 to 20 shots fired, according to officials.
No motive for the killing has been released, but a 15-year-old suspect is in custody. The suspect has hired a lawyer and is not speaking to investigators.
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The gun used was purchased by the suspect's father days prior to the shooting, and the family of the suspect also hired lawyers and are remaining silent.
Oakland County Sheriff Michael Bouchard said an investigation is underway but is a "massive undertaking," due to the need of interviewing nearly 1,000 witnesses, thousands of hours of surveillance footage and scanning through social media posts. No time frame for the completion of the investigation has been given.