A La Mirada substitute teacher, Taylor Welch, was arrested on suspicion of lewd contact with a student, said authorities.
The 22-year-old teacher and 13-year-old student allegedly met at Arlie F. Hutchinson Middle School and started a relationship via Facebook that developed into "sexting," sending graphic images, and inappropriate touching in the classroom.
The victim reportedly showed photographs on her phone to a friend, which led to a parent contacting school officials, who in turn notified the Los Angeles County Sheriff’s Department, notes NBC LA.
Detectives from the special victims unit took Welch into custody on Tuesday on suspicion of felony lewd acts upon a child, and distributing obscene material to a minor.
He is the second substitute in the Norwalk-La Mirada Unified School District to be arrested this year, says the L.A. Times.
He was being held in lieu of $140,000 bail.
Authorities urge anyone who may have been a victim to contact investigators at 1-877-710-5273 (LASD) or email@example.com
Lisa Brenner can be reached via Twitter @lisa_brenner