A 62-year-old Rocklin man was arrested Wednesday after he allegedly molested a teenage girl repeatedly. The arrest follows a nearly two-year investigation into the allegations.

In a statement, Mountain View police say that the man worked as a teacher and coach at Mountain View Academy, a private high school located on Shoreline Boulevard. In April 2020, they received a tip from a woman who said that there was "inappropriate conduct" between the man and a family member.

Over the course of a year and a half, detectives handling the case found that the man had repeatedly touched the victim and that his acts had "aggressively escalated" over time, police said.

The department received a warrant for the man's arrest last month, and arrested him on Wednesday, March 2, with the help of officers from the Rocklin Police Department.

The Mountain View Academy, a college preparatory for grades 9-12 run by the Seventh Day Adventist Church, was notified of the arrest on March 2, and has fully cooperated with police, according to police spokeswoman Katie Nelson. She said the investigation is ongoing, and that she could not say whether the alleged crimes took place on campus or in another location.

The man is currently being held in Elmwood Correctional Facility in Milpitas without bail, and was booked on suspicion of molestation and oral copulation of a minor, and lewd and lascivious acts with a child.

Police acknowledged the lengthy gap between when the allegations were first reported in April 2020 and the arrest this week, saying it took months of interviews and follow-up to obtain the warrant. The department said it also needed time to address the needs of the victim during a traumatic investigation.

"As with all of our cases, we work to ensure that there is a thorough investigation, which can take time," according to the statement. "Particularly when it comes to sex crimes investigations, we always prioritize the psychological and physical safety of the victim, which can also lead to more time needed during an investigation."

Police are asking anyone who was a victim or may know a victim to contact Det. Christine Powell at Christine.powell@mountainview.gov.