The LAPD says officers from the department's North Hollywood station responded to a report of a burglary Friday at Cyrus' home.
They say a man and a woman scaled a fence and got inside the house and garage while no one was home.
A 2014 Maserati luxury sedan and an unspecified amount of jewelry were taken.
Police asked Sunday that anyone with information about the crime call North Hollywood's burglary detectives.
Last month the 21-year-old pop star obtained a temporary restraining order against an Arizona man who was detained by police while trying to meet her.