Justin Bieber Shirtless Again, Walking Through Airport Security at Poland Airport [PHOTO]

Justin Bieber was seen going through Wladyslaw Reymont in Poland Monday without a shirt on.

The pop star was seen taking his shirt off at a security check point, surrounded by security guards, it is mandatory for a traveler to take off clothing only if there is metal attached.

Bieber was leaving the country following his concert there, adding to the bizarre incidents during his European tour. He was spotted wearing a strange gas mask in London, then showed up late for a concert and collapsed on stage due to shortness of breath during another.

The Canadian singer revealed his white underwear as his pants were hanging from his waist.

Bieber, 19, walked topless to the airport building, where it was 30 degrees Fahrenheit, then went on to his gate, only to get dressed again before boarding a private jet.

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

Unlike this unsuccessful tour dates in London, Bieber received a positive reaction and enjoyed performing to his fans in Central Europe.

He tweeted, "CRAZY SHOW!! Thank u POLAND!"

The show in Lodz was his 19th European concert of Bieber's "Believe" tour. He will be in Munich, Germany on March 28.