was our commitment to make sure that we did a thorough job as possible. >> reporter: the family remained visible throughout the investigation. leila's mother spoke about the closeness between her son and daughter. >> he never like pushed her around, like big brothers and sisters do. he never like was ever was mean to her. >> reporter: in the immediate aftermath of the killing two weeks ago, his usually serene northern california community of 7500 went into a near frenzy, as nervous residents believed a killer was at large. and wondered whether there would be more victims. >> i've lived here 33 years. i've never seen anything like this happen. >> we've had bad things happen in our community, but never like this to a little child. >> reporter: patricia campbell owns a popular diner in town. she and everyone else we talked to her were shocked at the turn of events. >> it's bad enough to lose one of your own children. i can't imagine losing one, too. by the hand of one of my own.ha