• At least one person was killed, and eight others injured in a shooting at a suburban Denver middle school Tuesday, and two suspects were in custody, authorities said.
  • Douglas County Undersheriff Holly Nicholson-Kluth says she doesn’t believe there are any other shooters, but tactical teams were still searching room by room.
  • Lines of firetrucks, ambulances and law-enforcement vehicles from multiple agencies were at the school and medical helicopters landed on a grassy field.
  • The shooting occurred at the middle school at STEM School Highlands Ranch, a public charter with more than 1,850 students in kindergarten through 12th grades.
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At least one person was killed and eight others were injured when gunfire erupted Tuesday inside a suburban Denver middle school not far from Columbine High School, according to local news sources. Two suspects have been taken into custody.

The Twitter account for the Douglas County Sheriff’s Office confirmed the death, on Tuesday afternoon.

“It is with extreme sadness that we can confirm that 1 student at the STEM School was killed in today’s #stemshooting incident,” the DC Sheriff’s Office wrote. “The immediate family has been notified. Douglas County Coroner Jill Romann has not officially identified the student is stating it’s an 18 year old male.”

Douglas County Undersheriff Holly Nicholson-Kluth said she did not believe there were any other shooters, but tactical teams were still conducting a room-by-room search of the building. She did not know if there were fatalities or offer any details about the wounded.

The shooting occurred at the middle school at STEM School Highlands Ranch, a public charter school with more than 1,850 students in kindergarten through 12th grades. The Highlands Ranch community is about 15 miles (24 kilometers) south of Denver.

Deputies responded around 1:50 p.m. to the school, which is near a sheriff’s department substation, and officers got there almost immediately, Nicholson-Kluth said.

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“As officers were arriving at the school, they could still hear gunshots,” she said.

CNN reported that the suspects targeted two separate locations of the school. Douglas County Sheriff’s Office Chief Tony Spurlock told CNN that the suspects “got deep inside the school” and also said that authorities “did struggle with the suspects to take them into custody.”

“Sheriff says suspects 1 adult male, 1 juv male in custody,” the Douglas County Sheriff’s Office tweeted on Tuesday. “No other suspects. 8 students injured, several critical, area hospitals. No staff or officers injured.”

The suspects are students at STEM School Highlands Ranch, according to a second tweet from the Douglas County Sheriff’s Office. The suspects’ names have not been released.

Rocco DeChalk, who lives near the school, told television station KUSA that he saw so many students running past his house that at first he thought it was a gym class. He went outside and saw a teenage boy who had been shot in the back being helped by a teacher and another student.

Read more: The 21-year-old UNC Charlotte student killed while jumping a gunman who opened fire in his classroom kept tackling the shooter even after taking 2 bullets

They brought the boy into his kitchen and alerted a police officer, who sent for an ambulance.

“He made a comment, ‘Oh, I’m starting to feel it now,'” DeChalk said. “I told him that was probably the adrenaline kicking in and he was going into shock.”

Lines of firetrucks, ambulances and law-enforcement vehicles from multiple agencies were at the school, and medical helicopters landed on a grassy field.

The sheriff’s office directed parents to a nearby recreational center to pick up their children. A fleet of school buses arrived and dropped off students, some of whom were crying and holding hands with their classmates as they were helped off. An ambulance also pulled up and let out a half-dozen children, none of whom appeared to be physically injured.

“We know this is a very worrisome situation for parents,” Nicholson-Kluth said. “Relatives are worried, and we are trying to get them back together as soon as possible.”

Gov. Jared Polis said in a statement that he was making state public-safety resources available to help secure the site and evacuate students.

“The heart of all Colorado is with the victims and their families,” he said.

The shooting comes nearly three weeks after neighboring Littleton marked the grim 20th anniversary of the Columbine school shooting that killed 13 people. The two schools are separated by about 7 miles in communities south of Denver.

Democratic Rep. Jason Crow, a gun-control supporter whose congressional district includes STEM, said the gun violence cannot continue.

“It is not enough to send thoughts and prayers. It is empty. It is weak, and it does an injustice to our children who are on the front lines of this violence,” he said.

This is a developing story. Please check back for updates.