The singer and his pals were reportedly "extremely abusive" to the flight attendant.
Justin Bieber and his father, Jeremy, were really flying high when they took a private jet from Canada to Teterboro, NJ last Friday (Jan. 31).
The plane was so full of pot smoke that the pilots were forced to wear oxygen masks so they wouldn't risk inhaling and failing any subsequent drug test, which would put their licenses at risk, according to an exclusive NBC News investigative report.
Furthermore, the captain on the leased jet repeatedly told Bieber and his entourage to stop smoking pot, according to an official report of the incident obtained by NBC News.
Bieber and his father were also "extremely abusive" to a flight attendant, according to the report, forcing her to take refuge in the cockpit. The captain also requested that Bieber and Co. "stop their harassing behavior," but after several warnings, he asked the flight attendant to stay with him near the cockpit to avoid further abuse.
In the report, the flight attendant said Bieber and his father were so verbally abusive, "she would not work another flight with them."
When the plane landed at Teterboro, it was met by DEA and Customs and Border Protection agents and police, and there was still pot smoke in the cabin, according to the report.
Bieber admitted to officials during questioning that he had smoked pot and drank alcohol but said he didn't have any more marijuana, NBC News reports. The plane was then searched, and although drug-sniffing dogs and authorities got indications that there was pot on the plane and in Bieber and his entourage's luggage, no unsmoked weed was found.
Bieber, his father and friends were allowed to go, though, because no one from the flight crew was willing to file charges against the passengers.
A longer version of this story originally appeared on THR.com.