San Miguel, CA -- A 20-year-old teacher's aide recently arrested for allegedly having sex with a 14-year-old boy, comitted a crime uncovered by a school employee who noticed hickeys on the boys neck. 

Sarah Drown, who was then a part-time teacher's aide for the Lillian Larsen Elementary School in San Miguel, is charged with four felony counts of unlawful sexual intercourse with a minor.  

The eighth-grade boy had been helping the after-school program since approximately October and had been seen with Drown on several occasions.  He admitted having sex with Drown.

Drown pleaded not guilty earlier this month to the charges.  Her preliminary hearing is set for the 29th.