Student kills 3, wounds 8 at Michigan high school

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Authorities say a 15-year-old sophomore opened fire at his Michigan high school, killing three other students and wounding eight other people, including a teacher.

Oakland County Undersheriff Mike McCabe said at a news conference that he didn't know what the assailant's motives were for the attack Tuesday afternoon at Oxford High School in Oxford Township, a community of about 22,000 people roughly 30 miles north of Detroit.

Authorities arrested the suspect at the school and recovered a handgun. They didn't immediately release the names of the suspect or victims.