DETROIT — A 15-year-old Oxford High School sophomore, armed with a semiautomatic handgun, is accused of a shooting at his school Tuesday afternoon, killing three students and injuring seven others and a teacher.
The events unfolded in about five minutes and police said the shooter, who was not injured, was arrested, turning himself over to officers.
Michael McCabe, the Oakland County undersheriff, said at a news conference it appeared the suspect worked alone, and investigators are interviewing students and scouring social media for clue to a motive.
It also was unclear whether he had targeted anyone.
Some students said the suspect was bullied.
Meanwhile, pastors and community leaders organized two prayer vigils for this evening.
As the nation's latest mass shooting draws national media attention, it puts questions of what to do about guns and renews political debates about gun control, violence and school safety.
Gov. Gretchen Whitmer, at the 5 p.m. news conference, called mass shootings a "uniquely America" problem that needs to be addressed. Later, responding to a reporter's question about how she felt, he nearly broke down.
Near tears, she added: "I think this is every parent's worst nightmare."
It's unclear whether there were warning signs. Police said they were unaware of them, but some parents and students said they had heard rumors before Tuesday that there would be an incident at the school.