Three students were killed and eight people were wounded Tuesday after a 15-year-old gunman opened fire at Oxford High School in Michigan, a community roughly 30 miles north of Detroit.

The three students killed were a 14-year-old girl, a 17-year-old girl, and a 16-year-old boy. Of the eight wounded, two were undergoing surgery and the other six are in stable condition.

The shooting lasted about five minutes, according to the New York Times.

The gunman, who is a sophomore at the school, was arrested at the school. Police confiscated the gunman's semi-automatic handgun as well as several clips.

"We believe he acted alone. There are no other shooters, there’s not another gunman. We don’t believe he planned this with anyone else, but we’ll be doing social media checks, talking to students," said undersheriff Michael G. McCabe.

The initial 911 call came in at around 12:51 p.m. ET.

Over 100 police officers and 60 ambulances responded to the scene.

"My heart breaks for the students, teachers, staff, and families of Oxford High School. The death of multiple students and the shooting of many others, including a teacher, is horrific,” Gov. Gretchen Whitmer said in a statement.

"No one should be afraid to go to school, work, a house of worship, or even their own home. Gun violence is a public health crisis that claims lives every day. We have the tools to reduce gun violence in Michigan. This is a time for us to come together and help our children feel safe at school," Whitmer added.

Oxford High School has 1,800 students. Oxford Township has about 22,000 people.

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