May 21 (Bloomberg) -- Sylvester Stallone, the star of the ``Rocky'' movies, was fined by an Australian court for importing and possessing testosterone and a banned growth hormone.

Deputy Chief Magistrate Paul Cloren today fined Stallone A$2,550 ($2,100) for importing 48 vials of the drug Jintropin, which contains human growth hormone, and four vials of testosterone, according to a spokesman for Sydney's Downing Center Local Court. Court officials declined to give their names.

The actor was also fined A$425 for possession of the substances and ordered to pay A$10,000 in legal costs to the Australian Customs Service, which brought the case. Stallone, 60, pleaded guilty last week to importation and possession of a prohibited imported substance, the official said.

Calls to the office of Stallone's Australian attorney, Phillip Boulten SC, were not immediately returned. Stallone was in Sydney to promote his latest film, ``Rocky Balboa.''

The actor and director was detained at Sydney airport in February by customs officers, according to the court official. Magistrate Cloren said he had tried to deceive the officers by claiming to have a prescription for the Jintropin, which was found in his luggage, the Sydney Morning Herald reported.

Jintropin is not legally available in the U.S. and couldn't be prescribed, Cloren said, according to the Herald.

Stallone said bringing the substances into Australia was a ``terrible mistake'' because he was ignorant of the country's import rules when it came to medications, the Herald reported, citing a statement from his lawyers.

Born in New York City, Stallone is best known for his starring roles in the ``Rocky'' and ``Rambo'' action movies. The first ``Rocky'' movie, which was penned by Stallone, won the 1976 best motion picture Academy Award, according to the actor's official Web Site.

To contact the reporter on this story: Emma O'Brien in Wellington on eobrien6@bloomberg.net

Last Updated: May 21, 2007 01:53 EDT