Marysville school shooter Jaylen Fryberg: what we know

There was a shooting at Marysville-Pilchuck High School, just north of Seattle, Friday morning. The gunman, 14-year-old Jaylen Fryberg, is dead of a self-inflicted gunshot wound. A female student is dead and several more are wounded.

Not much is known about Fryberg or his motives, and few clues are available on his social media accounts. In recent weeks, tweets from an unverified Twitter account that appears to have belonged to Fryberg became increasingly angry and melancholy. The last tweet from the account, posted on October 23, read, "It won't last.… It will never last…"

Here's a running list of what has been confirmed, and what we still don't know about Fryberg and the shooting.

What we know

— The shooter was identified by multiple media outlets as 14-year-old Jaylen Fryberg, who, according to NBC News, was named the school's freshman homecoming prince one week before the shooting.

— Three students are in critical condition with head injuries at Providence Hospital, according to hospital staff. Another student, with less severe injuries, was transferred to Harborview Medical Center in Seattle.

— One of the victims was Fryberg's cousin.

— Another person, a female student, was confirmed dead, according to Lamoureux.

— Fryberg died of a self-inflicted gunshot wound, Marysville Police spokesperson Robb Lamoureux confirmed at a Friday press conference.

— Fryberg acted alone.

— The shooting occurred in the school's cafeteria.

— Fryberg was an avid hunter, according to KOMO News. In an August 1 post to a now-deleted Instagram account that appeared to be Fryberg's, the teenager was shown holding a rifle that he described as a birthday present from his parents. It does not appear to be the gun that was used in the shooting, which NBC News described as a small handgun.

— Police have secured the scene and are now focusing on investigating what happened, according to Lamoureux.

— President Barack Obama has been briefed on the shooting, NBC News reported.

What we don't know

— It is unclear what kind of gun the shooter used.

— Not all the victims have been identified.

— A student told Fox News that the shooter had been a recent target of racist comments. Another student told the Seattle Times that the shooter targeted a girl who would not date him. Both said that the shooter seemed to target a specific group of people. These details have not been confirmed