LOS ANGELES - An attorney for Shia LaBeouf has pleaded not guilty to an unlawful smoking charge on his client's behalf.

Attorney Michael Norris entered the plea for LaBeouf on Wednesday, a day after a judge issued a US$1,000 warrant for the actor's arrest. The "Transformers" star was scheduled to be arraigned on the misdemeanour charge but he failed to appear at Tuesday's hearing.

The bench warrant was dismissed.

A hearing is set for April 24.

If convicted, the 21-year-old actor faces a maximum penalty of a US$1,000 fine and six months in jail.