Updated: 2/24/20, 7:56 p.m.
Two Oʻahu teenagers were transported to an emergency room in serious condition and were being treated for apparent stab wounds.
Paramedics responded to an emergency call from Mililani High School just after 10 this morning. An emergency services spokeswoman said the victims, one male and one female and both 16 years old, were injured in their upper bodies.
They are expected to survive their injuries, according to Honolulu Emergency Services.
The state Department of Education said there is a suspect in custody, and the school was initially in lockdown. The students were released at 11:30 a.m.
In a letter to parents and guardians, Mililani High Principal Fred Murphy said police arrested another student in the case.
"A police investigation is ongoing. In order to protect student privacy, our administration cannot disclose additional details," he said.
Murphy said the school will be open tomorrow with no change in its schedule. Pre-ACT and ACT tests that were set for tomorrow have been rescheduled to March 24.
The police, security personnel from other schools the DOE's security branch will be on campus tomorrow. Counselors will also be on hand to help support students, staff and families, he said.
"Parents are encouraged to monitor their child's behavior and mood over the next few weeks. If you notice any changes or have any concerns, please do not hesitate to contact our school," Murphy said.
Update from the Honolulu Police Department: Officers are at Mililani High School investigating an alleged stabbing incident. EMS personnel treated and transported two juveniles in serious condition. Suspect is in custody. The investigation is ongoing.
— Hawai‘i DOE (@HIDOE808) February 24, 2020
The Associated Press contributed to this report. This is a developing story, please check back for updates.