Miley Cyrus spends her time trying to shock the world, but she's probably in for a shock herself: one of her inner circle may be stealing from her!

Cyrus was the victim of a burglary in her own home the day before her birthday (Nov. 22). The perp, who's still unknown, made off with roughly $100,000 worth of purses and jewelry from her mansion. Police believed the theft took place in the afternoon hours, and thankfully the 'Adore You' singer wasn't home at the time of the break-in.

Police sources now told TMZ that they've observed security camera footage from both Cyrus' home and her neighbors, and there was no sign of forced entry nor suspicious activity or persons entering or leaving the mansion.

Cops also noted that there were numerous workers home at the time of the burglary, so investigators are questioning them about the incident.

Here's hoping they find out who's responsible and bring them to justice!