"Former Raiders quarterback JaMarcus Russell was arrested Monday at his home in Mobile, Ala., for possession of a controlled substance.

The arrest for possession of codeine syrup came as part of an undercover investigation, Mobile County Sheriff Office spokeswoman Lori Myles told the (Mobile) Press-Register.

Russell, 24, was booked into the Mobile Metro jail Monday afternoon. He was released a short time later after posting $2,500 bail. He is scheduled to appear in court July 20. A bond hearing is scheduled for Wednesday.

Russell and his agent, Eric Metz, did not respond to requests for comment. Raiders officials could not be reached for comment.

According to several medical websites, codeine syrup is used in a recreational drink known as "purple drank," "lean" or "sizzurp" as a means of enhancing the effects of alcohol. In high dosages, it can have effects, as well as risks, comparable to morphine."