Justin Bieber wants to build up ''positive energy'' after being accused of harassing a flight attendant.

The 19-year-old star, who allegedly filled his private plane with so much marijuana smoke on Friday (31.01.14) that the pilots had to don gas masks and verbally abused a female crew member, attempted to put his latest controversy behind him by retreating to a recording studio with rapper T-Pain in Atlanta, Georgia.

The Canadian singer posted a message on Twitter on Wednesday (05.02.14) with the caption: ''Back in my second home. Good to be back. Focused on building up positive energy''

The 'Baby' hitmaker has yet to comment on reports that he and his entourage, including her father, Jeremy Bieber, and 10 friends hot-boxed their leased Gulfstream IV and harassed the crew during their flight from Canada to New Jersey for the Super Bowl last weekend.

The official report from the incident, obtained by NBC News, stated: ''The captain of the flight stated that he warned the passengers, including Bieber, on several occasions to stop smoking marijuana.

''The captain also stated he needed to request that the passengers stop their harassing behaviour toward the flight attendant and after several warnings asked the flight attendant to stay with him near the cockpit to avoid any further abuse.''

Federal authorities searched the plane when it landed in the US, but nothing was found. None of the members of the flight crew were willing to press charges against the star so all passengers were let go.

But a source told gossip website TMZ.com that Justin, who was arrested for allegedly drunk driving and drag racing in Miami last month, was made aware the plane would be searched before he boarded because he is allegedly on a Homeland Security Watch List as a result of his pending criminal cases.