Commerce City Police Department officers arrested two students after they allegedly called in a false bomb threat on Wednesday and faked a school shooting, including using simulated blood, at Adams City High School.

“For many, calls of this nature are their worst nightmare. Whether a first responder, a parent, a teacher or a student — most will never forget this day,” Commerce City Police Department Chief Darrel Guadnola said in a statement.

Police were called to the school around 1 p.m. Wednesday after reports of both a bomb threat and an active shooter within the school. The caller also claimed that students were already injured inside the school, according to police.

The school currently has 1,422 students, according to state records.

More than 20 police vehicles from multiple agencies responded to the school by 1:30 p.m.

The school was placed on lockdown and “hundreds” of law enforcement officers entered the school and began to sweep, clearing rooms and looking for an active shooter, police said.

Police then found what appeared to be a blood trail in several areas of the school.

The school was officially cleared by 3 p.m. Police found two students covered in what appeared to be fake blood — the same substance officers found trails of through the building.

The students were arrested on suspicion of misdemeanor interference with staff at an educational facility and felony false report of explosives and false report of an active shooter.

The names of the suspects will not be released because they are juveniles.

The Adams County District Attorney’s Office will file official charges after an investigation.

The high school said it will continue to work closely with the police department in its investigation into the fake report, according to a news release.

In a subsequent social media post Thursday morning, the CCPD said that while the situation was scary, the hundreds of officers who rushed into the building were testaments to how much local agencies care about children.

“We can tell you until we’re blue in the face that the safety of your children is our top priority,” the department said. “But actions speak louder than words and yesterday our actions were screaming from the top of our lungs that your kids matter.”

The alleged hoax came just seven months after 16-year-old student Desmond Holly shot and injured two students at Evergreen High School before taking his own life.

That incident shocked the country, bringing attention to school shooting response and prevention within the state.

For example, Colorado lawmakers proposed legislation that would require social media companies to respond to warrants by providing concerning information regarding school shootings within 72 hours, as opposed to the 35 days currently allowed nationally.

“No community, and certainly no kid, should have to endure the type of pain, hate and loss that we have,” said Tyler Guyton, a senior and one of two student body presidents at Evergreen High School, at a news conference in February.