Gia Soriano, 14, a victim in Friday's Washington state high school shooting, has died, officials at Providence Regional Medical Center Everett said, reports ABC News.

Soriano was critically injured during the Marysville-Pilchuck High School shooting. She is the third person to die as a result.

"We are devastated by this senseless tragedy," her family issued in a statement. "Gia is our beautiful daughter and words cannot express how much we will miss her."

Authorities have identified the shooter who opened fire in the school cafeteria as Jaylen Fryberg, 14, a member of a prominent Tulalip Tribes family. He was a well-liked student at the school who played on the football team. He was named the Freshman Homecoming Prince a week before the shooting.

He shot five people inside the school before a first-year teacher intervened. Authorities do not know if the gun went off as he struggled with the teacher or if Fryberg intentionally killed himself.

One other female student died Friday but has not been officially identified. Shaylee Chuckulnaskit, 14, remained in critical condition at Providence Regional Medical Center.

Two of the students wounded in the shooting were Fryberg's cousins, Andrew Fryberg, 15, and 14-year-old Nate Hatch, according to Hatch's grandfather, Donald Hatch. Nate Hatch has improved but remained in serious condition at Harborview Medical Center in Seattle. Andrew Fryberg also remained in critical condition.

According to The Associated Press, a classmate named Jordan Luton told authorities Fryberg had been in a fight with someone who "said something racist to him" weeks earlier. Federal law enforcement confirmed that Fryberg had been suspended from school following the fight.

No one knows what motivated Fryberg to commit the shooting.

"We can't answer that question," Matt Remle, a tribal guidance counsellor with an office at the school, told The Associated Press. "But we try to make sense of the senselessness. ...

"Maybe it would be easier if we knew the answer. ... But we may never know."