Selena Gomez was visited by a stranger Sunday night at her brand new Calabasas home, according to TMZ.

Gomez and a friend arrived at her pad and heard a strange noise, prompting Gomez to ask her security to investigate. But before the guards arrived, a guy rang the doorbell and asked if Gomez was home. Gomez's friend answered the door and said no and Mr. Creepy left.

Sounds like Justin Bieber has developed some manners.

Law enforcement sources told TMZ sheriff's deputies from the Malibu/Lost Hills Department arrived a short time later and found that a 21-year-old man had broken into Gomez's guesthouse.

Is Justin Bieber 21 now? I thought he was 20, but he doesn't invite me to his birthday parties anymore.

The man, who may or may not be Canadian, was arrested on suspicion of burglary and trespassing and held in lieu of $50,000.

The website reported Gomez recently purchased a 5-bedroom, 7,200-square-foot Calabasas mansion for $3 million.

Contact Tony Hicks at Facebook.com/BayAreaNewsGroup.TonyHicks or Twitter.com/insertfoot.