The teenage gunman who opened fire at Abundant Life Christian School in Madison, Wisconsin, on Monday, killing a teacher and another student, was a 17-year-old student, according to the Associated Press.

The detail was shared with the AP by a police official who was not authorized to disclose personal information that police withheld from the press as of Monday at 5 p.m. CNN also reported that the shooter was a student.

No further details were immediately available and Madison police did not immediately respond to a request for comment.

Shortly before 11 a.m. on Dec. 16, police in Madison, Wisconsin, responded to an active shooter call reported at the school, Chief Shon Barnes said at a news conference.

Three people, including the shooter, died and six others were hospitalized with minor to life-threatening injuries, Barnes said.

The shooter was found dead at the school after officers responded to the scene.

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The circumstances surrounding the shooter’s death were not immediately clear, although Barnes noted that police did not fire their weapons.

However, police know the suspect’s identity and have issued a search warrant for the person’s home; Barnes said the family is cooperating with the investigation.