Police have confirmed that the death of a 16-year-old girl in Bloomington, Illinois, is being investigated as a homicide.

Bloomington Police and the McLean County Coroner’s confirmed that Mariah Kletz was pronounced dead at her home on Canada Lane on February 7, according to 25News.

The incident was initially being treated as a death investigation, though police are now considering it a homicide investigation.

The police and the coroner’s office said that preliminary information suggests Kletz’s death was an isolated incident. In light of the findings, they insisted that there is no threat to the public.

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Despite confirming that her death is now being investigated as a homicide, police have not shared any additional information as of time of publication.

The Bloomington Police Department did not immediately respond to Us Weekly’s request for comment.

Following Kletz’s death, her grandmother told 25News that she is heartbroken over the situation. She also said she had contacted police about Kletz’s death, though hasn’t received any additional information.

Normal West Community High School, where Kletz was a student, previously shared a statement with the students and staff about the tragedy.

“We have some extremely sad news to share with you. Our Normal West family has experienced a tremendous loss. Sophomore Mariah Kletz died over the weekend,” the statement began, per 25News. “We know that this news will affect each student and staff member differently. Those needing support in expressing their grief should report to 233 Virtual lab where we will have school guidance counselors, school psychologists, social workers, and other trained support staff who will be available to guide students and staff who may need a shared space and/or more information on how best to deal with this situation. Attendance will be taken for 7th and 8th hours for students who are reporting to the room 233 support space.”