A 19-year-old in a black cape and helmet went on a shooting rampage Saturday in an upscale Southern California neighborhood, killing a man and his daughter before committing suicide, authorities said.

The teen shot a 45-year-old man and his 21-year-old daughter to death in their home, said Orange County Sheriff's Department spokesman Jim Amormino. A 20-year-old son escaped after hearing shots.

The shooter, whose identity wasn't released, then walked across the street and fired into another house. A person inside suffered cuts from broken glass, Amormino said.

Another neighbor heard the commotion, came outside and was confronted by the teen, who tried to fire his weapon. When it misfired, the shooter went back to his own house -- less than 100 yards away -- and committed suicide, Amormino said.

The motive was unknown. Police said there was no known link between the teen and his victims.

The victims' names were withheld pending family notification.

Aliso Viejo is a small, affluent community near Laguna Beach.