Former Millbrae Gym Employee Accused of Sex With Teen Girl

MILLBRAE, CA- A South San Francisco man is behind bars Friday, suspected of having a sexual relationship with a teenage girl.

According to the San Mateo County Sheriff's Office, 21-year-old Diego Alberto De La Oliva first met the girl a couple years ago while he was working at the 24 Hour Fitness gym in Millbrae. The girl, who was 13 when they met but is now 15-years-old, apparently met De La Oliva when he was 19.

It wasn't until just last month that an alleged relationship was discovered, according to the sheriff's office.

"On March 2, 2016, the mother of the 15 year-old victim reported to the Sheriff’s Office that she had discovered that her daughter was involved in a sexual relationship with a 21 year-old man," the agency said in a news release.

Sheriff's officials say they started their investigation then, and "confirmed the establishment of the sexual relationship"– all of which allegedly occurred in San Bruno.

On Thursday, De La Oliva was located and arrested at a San Carlos Pep Boys auto store.

"He was interviewed and subsequently booked into the Maguire Correctional Facility," the sheriff's office said. "His bail was set at $200,000."

Anyone who may have information related to the suspect or this case was asked to contact Detective Joe Cang at (650) 259-2417 or by e-mail at: jcang@smcgov.org.