One day after a deadly shooting at a Southern California high school, friends and family members mourned 15-year-old Gracie Anne Muehlberger, one of two students who were killed when a classmate opened fire on campus before the start of the day's classes.

Police first received calls about gunfire at Saugus High School at 7:38 a.m., according to Los Angeles County Sheriff Alex Villanueva. The shooter, a 16-year-old student, pulled a gun out of his backpack and opened fire on five of his classmates before shooting himself.

All the injured students, including the shooter, were transported to the hospital. Two were pronounced dead. One student was discharged by Thursday evening, and two more girls remain in the hospital. Doctors said Friday they expect at least one of them to be able to go home in the next few days.

The shooter died Friday afternoon while being treated at the hospital.

The Los Angeles County coroner identified Gracie and Dominic Blackwell, 14, as the victims Friday.

Gracie's parents created a GoFundMe to set up a memorial for her.

"Our vivacious, funny, loyal, light of our lives, Cinderella, the daughter we always dreamed to have, fiercely strong and lover of all things fashionable — was our best friend," the parents wrote on the fundraiser page. "She is going to be missed more than words will ever be able to express."



On Twitter and Instagram, Gracie's friends posted heartfelt tributes, expressing sadness and anger over the tragedy.



Her brother, Riley Muehlberger, tweeted: "my heart is killing me right now, you are the best sister I could’ve asked for, I just know you’re my guardian angel now. I love you Gracie."