Why was Justin Bieber detained at LAX airport?

Justin Bieber has finally been released by U.S. customs after he was detained for more than four hours at LAX airport on Thursday.

The Canadian singer was arriving back into Los Angeles from Tokyo with his entourage when he was detained for “routine secondary question.”

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“It’s standard, especially after he has had other legal issues in the US in the past,” a source told US Weekly.

This year, the 20-year-old pop star has had a number of run-ins with the law, including a DUI arrest and assault charges.

He also raised a few eyebrows during his time in Japan, when he made a visit to the Yasukuni Shrine war memorial, which honours Japanese war dead, including 14 convicted war criminals from World War II.

His recent behaviour has prompted a petition to revoke his green card – but on Monday, the White House said they would not be commenting on the document, which has 274,000 signatures.

“Sorry to disappoint, but we won’t be commenting on this one,” read a statement. “We’ll leave it to others to comment on Mr. Bieber’s case, but we’re glad you care about immigration issues…”

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