The 18-year-old was performing in Tacoma, Washington, Tuesday when the theft took place and those responsible contacted him via Twitter, reports contactmusic.com.
The thieves wrote Wednesday: “Justin Bieber i got your stupid DMS (Document Management System). I don’t think so. gonna show the world. Tomorrow! (sic)”
They also posted some of his videos on YouTube.
Then added a message on Thursday: “Notice us… or we are going to put the other videos from the camera out! (sic)”
Bieber, who is annoyed about the theft of his “personal footage”, wrote on Twitter: “Sucks when you take personal footage and people don’t respect your privacy.
“Yesterday (Tuesday) during the show me and my tour manager Josh had some stuff stolen. Really sucks. People should respect others property. I had a lot of personal footage on that computer and camera and that is what bothers me the most. Lame. No Respect (sic).”