A 15 year-old student armed with an AR-15 rifle and 2 pistols invaded an Oregon high school Tuesday and opened fire, killing a 14 year old student. <br /> <br />The shooter later shot himself in a school bathroom after being confronted by police. <br /> <br />What was clear is that once again an American school where kids are supposed to be safe was transformed by terror into a crime scene. <br /> <br />"This is a very tragic day, one that I hoped would never ever be part of my experience," schools superintendent Linda Florence said. "We feel very sorry for our parents." <br /> <br />Reynolds High School in suburban Portland remained on lockdown as SWAT teams searched the classrooms for possible accomplices to the shooter, who was found dead in a bathroom. <br /> <br />The Multnomah County Sheriff's Department said in a Twitter message that the shooter was dead and that the situation at the school in Troutland, Or. had been "stabilized." <br /> <br />"We are still checking the building," Sue Strickland of the Troutland Police told USA TODAY. "We have about 40-50 units out there. We have several SWAT teams in the building right now and they are checking to make sure that they've got things under control. A semi-automatic weapon was used." <br /> <br />There were also unconfirmed reports that a teacher named Todd Rispler was shot in the hip and several other people were wounded by gunfire. <br /> <br />Freshman Daniel DeLong, 15, said while waiting after the shooting that he saw a physical education teacher at the school with a bloodied shirt. <br /> <br />"I'm a little shaken up," DeLong told the Associated Press. "I'm just worried." <br /> <br />DeLong said he was texting friends to make sure they were all safe. <br /> <br />"It just, like, happened so fast, you know?" he said. <br /> <br />Freshman Morgan Rose, 15, said she was hunkered down in a locker room with another student and two teachers. <br /> <br />"It was scary in the moment now knowing everything's OK I'm better," she said. <br /> <br />The gunman was armed with an AR-15 rifle, the same kind of weapon Adam Lanza used to slaughter 20 students at six staffers at Sandy Hook Elementary school in Newtown, Conn. <br /> <br />In the aftermath, the 2,800 students at the school were seen marching out of the building with their hands over their heads and terrified looks on their faces.