LIVERMORE — A teen was busted in the crowded bathroom of a local high school for allegedly selling marijuana products, after a fellow student narced on him, according to police.

The 18-year-old man, a student at Livermore High School, was arrested in September on suspicion of selling cannabis on campus after a school resource officer arrested him with dozens of products containing THC and nicotine, including roughly an ounce of marijuana, authorities said. He has not been criminally charged.

The officer was responding to a tip from a girl at the school, who told vice principals that the student was known for stashing marijuana in his pencil box and selling it to kids. A vice principal confronted the young man after he was found in a boy’s bathroom with 20 other students. When asked if he was selling “vapes” for $35, the student denied it, sort of.

“That’s way too much, it’s more like $25,” he allegedly replied.

Police later arrested the student and booked him into Santa Rita Jail in Dublin, logging the cannabis, nicotine, and $218 found on him as evidence, the police report says. When police attempted to question him it, he answered a couple questions then lawyered up, authorities said.