The 16-year-old was last seen at Batavia High School at 11:30 a.m., Monday.
She was wearing a black and silver scarf, a black and pink cosmetology sweater, black yoga pants and white Jordan high-top sneakers.
She was carrying a cheetah-print backpack.
She may still be in the local area.
Tips on her whereabouts should go to Batavia PD, (585) 345-6350.
"As in all cases of runaway youth, people who knowingly harbor these individuals are committing a crime," said Det. Rich Schauf.
UPDATE 4:30 p.m.: Olivia A. Rivera-Ellis has been located.
