MINNETONKA, Minn. - A 12-year-old boy has been charged as a juvenile in the stabbing death of his 16-year-old brother, according to the Hennepin County Attorney's Office.

Officers were called to an apartment in the 11300 block of Fairfield Road in Minnetonka around 8 p.m. Saturday.

Police believe the 12-year-old used a kitchen knife to kill his brother.

The 16-year-old was taken to North Memorial Medical Center, where he was pronounced dead.

On Monday, officials with Hopkins Public Schools released a statement confirming the two siblings were students in their district -- the 12-year-old attends North Junior High and the 16-year-old was at Hopkins High School. They say they will not identify either student until authorities do.

The statement reads, "Our hearts and thoughts go out to the family who is experiencing an unthinkable loss. As a district, and as a school community, we are focused on providing care and support to students and staff who are struggling to process this tragic news. We have deployed our crisis management team and grief counselors are currently available to students and staff. We will keep these supports in place for as long as needed."

Police continue to investigate the circumstances of the fatal stabbing.

On Sunday, a press release stated the mother and other family members were home at the time of the incident. "Police are working with the family to determine the circumstances that led to the stabbing," authorities stated.

The 12-year-old was not injured. He was taken to a hospital for evaluation, and a police statement Monday said he was being held in the Hennepin County Juvenile Detention Center while the county attorney's office decided on charges.

Minnetonka police chief Scott Boerboom described the incident as a terrible narrative.

"I don't have a message other than the fact that this is a tragedy," Boerboom said. "We have a family again that was torn apart by this tragedy and we're here to make sure we support them."

Boerboom said during the incident there were other family members in the apartment, including another 12-year-old twin.