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This is at least the THIRD time this has happened this year!

Last week Justin Bieber and his entourage were detained at the Brisbane, Australia airport, and TMZ reports that customs agents found marijuana on one of the pop star's friends.

And not only that, but the Biebs got in trouble for uttering a few obscenities when the search was going down! The Australian Federal Police told the website that a 19-year-old man was detained and subsequently released after getting a stern warning for using "inappropriate language." So what did he say? Bieber allegedly went off on the interviewing officer, and Sydney Confidential reports that he sneered, "You're just a female vagina."

The AFP found pot on a 23-year-old man, and though the suspect was released, he got a ticket for importing drugs. A source close to Justin tells the website the suspect had a disposable vaporizer with residue in it. An attorney for the suspect appeared in court today and paid a fine.

Back in April Bieber's tour bus was raided by Swedish police and authorities found a "small amount" of what appeared to be marijuana, and the same thing happened in July at the Canadian border.