A science teacher for an Alabama high school has been arrested after allegedly selling steroid drugs to undercover narcotics agents.

David Darden

Albertville High School teacher David Darden was not at school today after being arrested by Marshall County investigators on a charge of unlawful distribution of a controlled substance.

"It's our understanding at this point that no students were involved," said Albertville City Schools Superintendent Ric Ayer. "We don't really comment on specific personnel actions, but I can tell you in similar cases, employees have been placed on administrative leave until their cases were taken care of in court."

Darden began teaching at Albertville in August 1991, Ayer said. The school serves ninth through 12th graders.

Principal Deidra Robinson said a substitute is covering Darden's classes temporarily.

Further details weren't available immediately.