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BERLIN (AP) -- German authorities have posted a public notice urging Justin Bieber to get in touch with them about an unpaid bill for his former pet monkey, Mally.

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Bieber failed to produce the necessary vaccination and import papers for the monkey when he arrived for a European tour in March. Mally became the property of the German government in May when the Canadian singer failed to claim his pet.

A spokesman for the Federal Agency for Nature Conservation says Bieber has one week to pay $1,500 for the monkey's care.

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Franz Boehmer said Tuesday that otherwise customs officials "have ways of making him pay" next time he enters Germany.

Bieber is already on the hook for a separate $6,600 bill from Munich customs.

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