A California teacher and water polo coach has been arrested for allegedly engaging in lewd acts with a male student and sending him explicit photos, authorities said.

Amanda Quinonez, 30, who works at Eleanor Roosevelt High School, just outside Los Angeles, was taken into custody Tuesday.

Riverside County Sheriff’s Department investigators said they were called to the school following allegations Quinonez had “committed lewd acts” with the underage student.

During their probe, authorities found Quinonez had allegedly sent the boy “explicit photos of a sexual nature.”

Authorities have not released the alleged victim’s age.

Principal Dr. Greg Anderson sent a letter home to parents earlier this week saying they had notified authorities as soon as they became aware of the possible “inappropriate relationship,” the LA Times reported.

He did not disclose how the school was notified of the allegations.

Anderson added that the school district has a “zero-tolerance for any behavior that endangers our students.”

It wasn’t immediately clear if Quinonez, who was released from custody Wednesday on a $50,000 bond, had been placed on leave in the wake of her arrest.

The sheriff’s office said its investigation is ongoing.

Quinonez has worked at the school since 2016 as a language arts teacher. She also coached the boys’ and girls’ water polo teams.