Two male suspects were taken into custody Tuesday, one adult and one juvenile, following a school shooting in Colorado. Both suspects are reportedly students. 

According to the Denver Post, the shooting occurred shortly before 2 p.m. local time at STEM School Highlands Ranch in Highlands Ranch, Colorado. Eight people were injured in the attack. One student, an 18-year-old male, was killed, Denver7 reports

The public charter school has a total of 1,850 students in grades K-12. The building was placed on lockdown—along with other area schools—as police cleared the building. It was initially reported that officers were searching for a possible third suspect; however, officials later said they do not believe a gunman is at large. The FBI is assisting local law enforcement.

The school is located about 8 miles southeast of Columbine High School, where two teenage gunmen fatally shot 12 students and a teacher more than two decades ago.

Parents were instructed to meet their children at the nearby Northridge Recreation Center.

"It’s just too bad that we have to worry about this," said Matt Murphy, who has two children enrolled at the school. "I know my kids and their friends are OK, but I know there are people who are not."

A spokesperson for the Littleton Adventist Hospital has confirmed there are five people being treated for injuries sustained during the shooting. The identities and conditions of the victims have not been revealed.

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