Schools on lockdown in Colorado after shooting - WKOW 27: Madison, WI Breaking News, Weather and Sports

UPDATE: 18-year-old student identified as Colorado shooter


UPDATE (WKOW) -- Police have identified 18-year-old Karl Halverson Pierson as the student who opened fire at a suburban Denver high school before turning the shotgun on himself.

Arapahoe County Sheriff Grayson Robinson tells the Associated Press that Pierson did not try to hide his weapon after entering the school from a parking lot and asking for the teacher by name.

Robin says Pierson had a "confrontation or disagreement" with the teacher, but did not say more about a possible motive at this point in the investigation.

Authorities say Pierson shot one student, not two as originally reported. The wounded 17-year-old student has had surgery and is now in critical condition. She's been identified as Claire Davis. 

Authorities say Pierson shot and killed himself less than a minute after shooting Davis. 

Another female student went to the hospital, reportedly with a minor gunshot wound; however, Robinson says she was not injured, just covered in blood from the student who was wounded.


UPDATE (WKOW) -- Investigators of a school shooting at Arapahoe High School say the student gunman apparently left two explosives behind.

Authorities found two Molotov cocktails at the school. Arapahoe County Sheriff Grayson Robinson says one of the devices detonated, but the other did not.

Robinson says the gunman shot and injured two students before shooting and killing himself.

One of the students is in the hospital in critical condition. The other student's gunshot wound was minor.

Sheriff Robinson says the gunman, who has not been identified, was armed with a shotgun and was looking for a specific teacher to confront. Robinson says that teacher left the building in hopes the shooter would leave the building as well.


UPDATE (WKOW) -- Officials say a call came in this afternoon for an active shooter situation at Arapahoe High School in Colorado.

The shooting suspect entered the building and asked for a specific teacher by name.

Officials say that is when that teacher exited the building which was the best move in order to keep the students safe.

One student was shot and is in serious condition.

One other student was injured with a minor injury and is expected to be released Friday night from an area hospital.

Police say they activated their active shooter protocol immediately which helped them find the shooter after 20 minutes of the call made.

When the shooting suspect was found, police say he was dead of what appeared to be a self-inflicted gunshot wound.

Officials are still investigating what happened in the school and to the suspect, but they do believe the suspect acted alone.

Currently police will not identify the shooter, but did say he is a current student at the school.

We will continue to update this story as we find out more.


CENTENNIAL, Colo. (WKOW) -- Police say the shooting suspect was found dead inside the Colorado school.

A hospital spokesman says a student is in critical condition.

Jason Dunkel, spokesman for Littleton Adventist Hospital, says the student was in surgery Friday. It's unclear how the student was wounded.

Colorado division of emergency management spokeswoman Micki Trost said her director went to Arapahoe High School in Centennial after reports of an active shooter. There weren't any more immediate details.

Students are being patted down outside the school as they are evacuated.

The school is about 8 miles east of Columbine High School in Littleton, where two teenage shooters killed 12 classmates and a teacher before killing themselves in 1999.


CENTENNIAL, Colo. (WKOW) -- Colorado emergency officials say police are responding to a report of a shooting at a high school in suburban Denver.

It happened at Arapahoe High School in Centennial. There weren't any more immediate details.

Reports of two people injured.

Police were outside the school, and students have been seen outside being evacuated and checked by police.

The school is about 8 miles east of Columbine High School in Littleton, where two teenage shooters killed 12 classmates and a teacher before killing themselves in 1999.


CENTENNIAL, Colo. (WKOW) --- Two people are injured after a shooting at Arapahoe High School in Centennial, Colorado according to KMGH in Denver.

Officials tell KMGH that the suspect is still in the school.

Littleton Public Schools are on lockdown.

We will keep you updated as we find out more here on

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