An Orange County teacher was arrested on child porn possession charges.
Keh-Tai Culbreath, 30, was arrested at his Lake Elsinore home on May 25.
A six-month investigation revealed several hundred pornographic images of children ranging from infants to young teenagers on Culbreath's computer, authorities said.
He is a part-time teacher at Tesoro High School.
Fontana Police Officer Jay Sayegh urged parents to be involved with their children's activities online.
"A lot of times children don't realize significance of what they might be exchanging with friends, making sure they're not alone with adults," he said.
Culbreath is on unpaid leave.
Although detectives do not believe any Tesoro students are in the images, they'd like to hear from any parents who may have concerns.
