Officials looking for motive in California school shooting

  • Students embrace during a vigil at Central Park in the aftermath of a shooting at Saugus High School Thursday, Nov. 14, 2019, in Santa Clarita, Calif. Los Angeles County sheriff’s officials say a 16-year-old student shot five classmates and then himself in a quad area of Saugus High School Thursday morning. (AP Photo/Marcio Jose Sanchez)

  • Doctors at Providence Holy Cross Hospital in Mission Hills tell reporters they treated a 15-year-old girl and a 14-year-old girl after Thursday’s shooting at Saugus High School in Santa Clarita, during a news conference Friday, Nov. 15, 2019 in Los Angeles. The suspected gunman shot five students, seemingly at random, and then shot himself in the head and remains in critical condition Friday. (AP Photo/Damian Dovarganes)

SANTA CLARITA, Calif. — Investigators worked to figure out why a boy known as a “regular kid” opened fire outside a Southern California high school on his 16th birthday, killing two students and wounding more before turning the gun on himself.