The singer didn't fill out the right paperwork for primate Mally

Justin Bieber landed himself in trouble with German customs official last week when he took his pet monkey Mally to Munich in a private jet without any of the correct paperwork.

The teen singer was detained for ‘some time’ at Franz Josef Strauss Airport while Mally – who is thought to have been given to Justin on his 19th birthday last month – was confiscated.

Justin has been acting like a right diva. He is out of control and lives in an alternative reality to the rest of us,’ says a source.

‘He didn’t think about the potential risks of flying a monkey from one continent to another. He and Mally go everywhere together.

‘He’ll be heartbroken it has been put in quarantine. He seems as fond of Mally as Michael Jackson was of his chimp Bubbles.’

Justin rented the Cessna Citation X plane for £13,000 ahead of his gig at Munich’s Olympiahalle.

He’s now said to face a fine of over £10,000 for sneaking his pet along with him.

‘The animal required a certificate of health and other authorisations,’ a customs spokesman tells The Sun.

‘You cannot just land with a wild animal and bring it into the country if the flight has not originated from another EU country and you don’t have the proper paperwork.’

Justin‘s agent declined to comment to The Sun.

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Anna Duff