Zoey 101 Star Pleads Not Guilty
TMZ broke the story ... Underwood was arrested earlier this month outside his Cloud 9 hookah lounge in Port St. Lucie for violating his probation -- a misdemeanor in Florida. The lounge is co-owned by Underwood.
According to law enforcement, a warrant was issued for Underwood's arrest after his probation officer discovered Underwood had failed a drug test. The probation officer listed other violations as well, like failing to complete a substance abuse program.
Underwood is currently on probation stemming from his prior arrest in April ... when cops say he was in possession of marijuana.
Underwood had pled no contest and was sentenced to 12 months probation. more on this story
TMZ submitted this story.