Alliso Viejo, Calif. ? A 19-year-old in a black cape and a paintball mask went on a shooting rampage in his upscale Southern California neighborhood Saturday, killing a man and his daughter before committing suicide, authorities said.

William Freund also fired shots into another house and confronted a neighbor outside, said Orange County Sheriff’s Department spokesman Jim Amormino.

A neighbor said Freund had attended high school with one of the victims, but police said a link between the teen and the victims had not been confirmed.

“It may have been random,” Amormino said.

Freund left his home about 9 a.m. and drove less than 100 yards to a house where he killed Vernon Smith, 45, and daughter Christina Smith, 22, with a shotgun, Amormino said. A 20-year-old son escaped after hearing shots.

Freund then walked across the street and fired into another house, Amormino said. A person inside suffered cuts from broken glass.

Another neighbor heard the commotion, came outside and was confronted by the teen, who tried to shoot but the gun misfired, Amormino said. He said Freund then went back to his own house and committed suicide, Amormino said.

Neighbor Katherine Anderson, 15, said Freund and Christina Smith had attended Aliso Miguel High School together.

Anderson, whose older brother had given Freund a ride to school, described Freund as “a real quiet guy.”

Other neighbors said Freund would sit in front of his house and play guitar for hours at a time.

Police tape blocked off much of the large subdivision in the hills above Aliso Viejo, a wealthy section of south Orange County.

The neighborhood was described by residents as a family community where people often socialized. They said Smith’s house was known for its holiday decorations.