Shirtless Justin Bieber startles Polish airport officials

In another strange incident during his current tour, Canadian pop sensation Justin Bieber startled Polish airport officials on Monday by parading through an airport shirtless.

After leaving his sold-out concert in the central Polish city of Lodz, the 19-year-old pop singer removed his shirt en route to the airport late Monday night.

Despite an outdoor temperature reported to be approximately -10 C, Bieber proceeded shirtless into the airport, through security and to his gate. He dressed before boarding a private jet.

"He wasn't told to take off his clothes. He had no metal objects on him," an airport spokeswoman told Reuters. "He's quite skinny so I assume he was probably freezing."

The incident is the latest in a series of eccentric antics from the Stratford, Ont.-born singer, currently on the European leg of a tour promoting his album Believe.

He recently made headlines in London for appearing in public in a gas mask, starting a show late, suffering breathing problems mid-concert and scuffling with paparazzi outside of a hospital. Days later, he cancelled a concert in Lisbon on short notice.