James Scott Newman, 14, sits Friday with his attorney, David Houston, before his initial appearance in court in Reno. His arraignment was delayed until next week as prosecutors continue to weigh how to pursue to case. Newman remains jailed on $150,000 bail following a shooting at Pine Middle School. THE ASSOCIATED PRESS

RENO -- Arraignment for a Reno eighth-grader accused of opening fire in a school cafeteria was postponed Friday as prosecutors continued to weigh whether he will face charges as an adult or juvenile.

James Scott Newman, 14, spent about a week planning the attack that injured two Pine Middle School students on Tuesday, court documents show.

He researched the 1999 Columbine High School killings on the Internet and, in choosing his weapon, decided against using a knife because "he did not want to be up close when blood came out of any of the victims," a police affidavit said.

Newman and his attorney, David Houston, made a brief appearance before Justice of the Peace Fidel Salcedo by video camera from the Washoe County Jail before the proceeding was continued until Tuesday.

Newman remains jailed on $150,000 bail on suspicion of attempted murder with a deadly weapon and use of a firearm by a minor. Formal charges, however, are pending and will determine whether the case proceeds in District Court or the juvenile system.

One student was shot in the arm and another was grazed by a bullet that ricocheted off the floor in the shooting Tuesday morning at the Reno middle school.

Newman told investigators that he was tired of being put down as ''stupid" by his father, brother and others, and planned the March 14 shooting as a way to end it, according to a search warrant affidavit by police Detective John Ferguson.

On March 13, the day before the shooting, Newman said he was given an ammunition collection by his father that included three live .38-caliber rounds.

That night when his parents went out to dinner, he took a pistol belonging to his mother that was kept in a small case on a shelf in his father's closet, and put it in his backpack, the affidavit said.

The next day at school, he loaded the three bullets in a bathroom, then picked his victim, Alexander Rueda, at random in the hallway, the affidavit said. A friend yelled at him to put the gun away, but Newman told him to run.

Twice he pulled the trigger, but those chambers were empty. He then fired three times at Rueda, missing him twice but striking him once in the arm and torso, police said.

Rueda was treated at a hospital and released the same day.

Newman was arrested moments after the shots were fired and was taken to the police station, where he "waived his rights," Ferguson said.

Newman also was "adamant he did not want his parents present during the interview," Ferguson wrote, and the interview continued until Newman's father arrived and requested that it stop until they could consult a lawyer.