SANTEE, Calif. (AP) Some classmates described the 15-year-old alleged shooter as a ''nerd'' and a ''dork'' and said he was taunted relentlessly. Others said the high school freshman told them he was going to shoot up the campus but they didn't take him seriously.
''We thought he was joking,'' said Neil O'Grady, 15. ''We were, like, 'Yeah, right.''' While they didn't want to warn authorities, he said, friends did check ''Andy'' Williams for weapons Monday morning, but didn't search his backpack.
Authorities said Charles Andrew Williams opened fire at Santana High School, killing two and injuring 13 in this middle-class San Diego suburb. The gun belongs to the boy's father, District Attorney Paul Pfingst told the NBC ''Today'' show Tuesday.
One student said he had a smile on his face as he fired away with a .22-caliber pistol.
''It was total chaos. People were trying to take cover,'' said student John Schardt, 17, who was in a nearby classroom when the shooting started about 9:20 a.m. in a boys' restroom.
Police Lt. Jerry Lewis said the teen-ager shot two people in the restroom, then walked into a quad and fired shots randomly. He stopped to reload his weapon as many as four times, getting off 30 or more shots, Lewis said.
''The bell had rung to go to class and we were all walking to go to class and all of a sudden you hear the sound of like a cap gun,'' said student Jennifer Wall.
''Pop, pop, pop and everyone started ducking,'' recalled fellow student Nika Ocen-Odoge.
Andrew Kaforey, a 17-year-old senior, said he ran into the bathroom with a security guard after hearing what sounded like a firecracker or a gunshot. ''He pointed the gun right at me but he didn't shoot,'' Kaforey said.
As he and the guard ran out, Williams shot the guard in the back, Kaforey said.
Williams finally surrendered in the bathroom, dropped his gun and said he acted alone, telling officers: ''It's just me,'' according to authorities.
Students Bryan Zuckor, 14, and Randy Gordon, 17, were killed. Zuckor was killed in the bathroom; Gordon was wounded on the quad and died at a hospital.
Eleven other students, a 29-year-old student teacher and a 22-year-old campus security guard were wounded. Another student suffered minor injuries when he crashed his car fleeing the campus.
The injured were taken to hospitals. Some were released after being treated, while others were listed in good condition.
''We have established no real motive,'' Lewis said about the shooting. ''He did not have any particular targets in mind.''
But fellow students and an adult acquaintance said they had heard the boy's threats over the weekend.
''He's a good friend. If he was joking, I wouldn't want to get him in trouble,'' O'Grady said.