The Baby singer's pet monkey was confiscated by German officials and left in a quarantined area after the pop star, 19, didn't file the necessary paperwork to bring the animal into the country upon arriving there, customs spokesman Thomas Meister told the AP.
Bieber took the stage in Munich on Thursday with dates in Austria and Germany on the slate. He insisted the monkey (reportedly named "Mally") come with him on the plane there despite the lack of proper documentation, a source told the UK Sun.
“Justin has been acting like a right diva. He is out of control and lives in an alternative reality to the rest of us," the source told the paper. "He didn’t think about the potential risks of flying a monkey from one continent to another.
“He and Mally go everywhere together. He will be heartbroken it has been put in quarantine. He seems as fond of Mally as Michael Jackson was of his chimp Bubbles.”
It's the latest in a series of recent incidents that have some speculating the size of Biebs' ego has swelled past his superstardom.
In March alone, he stormed out of his birthday bash at a London nightclub; was booed by fans after showing up more than two hours late at his first night at the O2 Arena; cursed at paps there; and was accused of assaulting a neighbor in Los Angeles.