SEATTLE (AP) _ A 13-year-old boy arrested in a school shooting incident that set off a panicked evacuation of classmates was ordered held Wednesday until charges are filed.

Josh Warnock did not appear at the hearing at King County Juvenile Court before Presiding Judge Laura Inveen.

``He's doing fine,'' said Warnock's father, Tim Millus, 38, of Auburn, after the hearing. ``I went down and talked to him. He's doing OK.''

The boy's lawyer, Simmie Baer, declined to comment Wednesday.

Charges were expected to be filed by Friday.

Warnock has been held since his arrest Tuesday for investigation of assault with a firearm and reckless endangerment.

Witnesses said Warnock climbed onto a table in the Dimmitt Middle School cafeteria in Renton Monday, fired a single shot from a .22-caliber handgun and ordered the approximately 50 students inside onto a stage. But instead, the students fled the room. No one was injured.

Warnock spent Monday night in woods near his grandparents' house, then turned himself in Tuesday and led sheriff's deputies to the gun, King County Sheriff's spokesman John Urquhart said.