An 18-year-old babysitter in San Antonio, Texas, has been arrested and charged with aggravated sexual assault, according to local reports.
Police say Esmeralda Medellin performed sexual acts on a 4-year-old boy while babysitting him in March. She allegedly coerced the child to perform sexual acts on her, as well.
Citing the arrest affidavit, The San Antonio Express-News reported that the child alerted his mother to the alleged sexual assault while Medellin was still in their home on March 28. The mother immediately called police, and both the boy and Medellin were taken to the hospital to undergo a sexual assault examination ― the results of which were released on Wednesday and appeared to confirm the child’s account of the assault, reported WOAI-TV.
Medellin was arrested on Thursday and is being held on $75,000 bond, reported KENS 5 News. It remains unclear if the woman had a relationship with the boy’s family beyond her babysitter role.
Most victims of child sexual abuse are assaulted by someone they know. According to the Rape, Abuse and Incest National Network, more than 90 percent of child sexual abuse victims know their abuser ― often very well.
This article originally appeared on HuffPost.