The 16-year-old left around 6:40 a.m. to ride her bike to school. She never showed up at school and has not been seen or heard from since.
Shaun Hampton with the Sacramento County Sheriff's Office says it appears Aliayh may have run away from home following an argument with her parents over an ex-boyfriend.
The teen's mother, Christina Miller, said she had a confrontation with her daughter about the girl's ex-boyfriend. She told FOX40 there is a chance that she's with him now.
But things haven't turned out to be that simple.
Aliayh's friend, Amber Boemker, says she talked with the ex-boyfriend Saturday night and he denied knowing where Aliayh is.
"And he just kind of told me 'oh this and this,' and he really didn't have any emotion," Boemker said. "And that's what actually kind of scared me."
Friends of Aliayh said she isn't acting like herself.
"She would let one of us know, 'Hey I'm OK, I'm not hurt, I'm not lying somewhere in a ditch,'" Boemker told FOX40. "And that's what scares me, is that she could be somewhere lying in a ditch, dead, and we're not going to know."
Aliayh was wearing a floral backpack at the time of her disappearance.
She is 5 feet 2 inches tall and 120 pounds with brown hair and eyes. Her lip and belly button are both pierced.
The family says that starting tomorrow investigators with the missing children's organization will help the search to find their daughter.
If you see Aliayh or have any information regarding her whereabouts contact the sheriff's office at 916-874-5115 (case number 71-326-766).