i m karl pierson, a freshman out of high school in littleton. reporter: murphy suspended from the team in september. pierson encountered 17-year-old senior claire davis, shooting her apparently at random point blank in the head. she was an innocent victim of an evil act of violence. reporter: now she remains in critical condition at a local hospital. this in no way defines us. reporter: at a vigil students lit candles singing their fight song. we got the spirit of arapahoe reporter: and prayed for their friend. i know how much she loves all of you guys and i know how much this would mean to her. reporter: the sheriff praising the school s quick deployment of its active shooter protocol and the fast action of an on catch us deputy closing in on pierson when he shot himself. the whole ordeal over in 80 seconds. authorities hailing coach murphy as a hero atectempting to lure
released a statement overnight saying she is actually in a coma, remaining in critical condition at a local hospital. meanwhile, investigators have been looking into the details around this shooting all weekend looking at surveillance tape, and they say it s very clear that this rampage could have been a lot worse. the school is in lockdown, i m not sure why. reporter: dispatch recordings, police rush toward arapahoe high school following reports of gunfire. be advised at this time we have one student down and they have found shotgun shells. it was terrifying because we heard gunshots. reporter: 18-year-old karl pierson entered the school investigators say bent on revenge. everyone saw him realized he was armed with a shotgun. the individual also had a bandalera of multiple rounds of shotgun ammunition strapped across his body, and he was also armed with a machete. reporter: pierson s target his debate coach, tracy murphy.
pierson away from the school during the rampage. it is my strong opinion this individual would not have come to the school armed with a shotgun and multiple rounds of ammunition had he not intended to use those rounds of ammunition to injure multiple people. reporter: the sheriff is now vowing never to speak the shooter s name again. deserves no notoriety and certainly no celebrity. reporter: arapahoe high school will remain closed today and tomorrow. teachers and students will be coming back to retrieve their possessions later on this week. no word yet on when class also actually resume. it s clear it s going to talk a long time for this community and this high school to recover from yet another tragic shooting. chris in. casey, strong message there from the head of that school saying no reason to mention this person except to understand what went wrong and celebrate those who kept it from becoming even worse. different story for you now, baseball, under the microscope for
becoming another columbine. casey. reporter: that s right, chris. a 17-year-old student claire davis remains in a coma in a local hospital in critical condition this morning. she is the lone victim. authorities after investigating all weekend long say it could have been much worse. dispatch recordings as police rushed towards arapaho high school following reports of gunfire. at this time we do have one student down and they have found shotgun shells. it was terrifying because they heard gunshots. reporter: 18-year-old karl pierson entered the school, investigators say, bent on revenge. everyone that saw him realized he was armed with a shotgun. the individual had a bandalara of shotgun ammunition strapped arabia cross his body and he was
then we heard the screaming. police say pearson wanted revenge because of what police call a confrontation or disagreement. witnesses saw pierson enter the high school carrying a shotgun and making no attempt to hide it. pierson asked other students the whereabouts of a faculty member, accordingly the librarian and head of the debate team. when authorities heard that the student was asking for him, the teacher exited immediately. i found him. he was running military towards the building. i alerted everybody in the building. that s when i heard two big bangs. zbl in addition to the shotgun. authorities found two molotov cocktails inside the school. one was rendered safe. the other was detonated. that s why the deputies found