s. hart school district canceled all classes and this note. the l.a. county sheriff announced, that sheriff's department employee was the aunt of one of the teens killed. this brings the total number of school shootings this year to 32, in k through 12 alone. sara sidner with more from santa clarita. >> reporter: students running for their lives, as bullets were being fired over and over again, by a shooting suspect, who police say was also a student. a 16-year-old asian male, who had come into school with a backpack. went into his backpack, pulled out a .45 caliber semiautomatic pistol and began shooting students around him. a 16-year-old girl and a 14-year-old boy ended up losing their life after being shot by the suspect. as we understand it, the suspect used the last bullet on himself, shooting himself in the head. and for the entire day thursday, he was in critical condition. the last person still remaining in the hospital. all the rest of the victims who survived were able to go home. we know, though, from students, it was terrifying in the school when all of this began. >> we heard the one shot a