08/09/2004 at 08:20 AM EDT
Police are investigating a break-in and burglary that apparently occurred Wednesday night at the Hollywood Hills home of Paris and Nicky Hilton.
"Everything ... Just all my valuables. All my jewelry. All my money," Paris Hilton, 23, who was not home at the time of the robbery, told Los Angeles station KABC-TV.
A laptop, whose contents have not been disclosed, also reportedly was taken.
Detectives have yet to identify a suspect, according to police spokeswoman Esther Reyes.
Citing the ongoing investigation, Reyes would not comment further, other than to say that Nicky Hilton returned home early Thursday morning to discover the break-in, which apparently occurred sometime after 9 p.m. Wednesday.
Police could not confirm a report on Access Hollywood that the home had been "ransacked" during the burglary, but Nicky, 20, told USA Today: "My grandmother passed away a few months ago and left my sister and me all this jewelry, and now it's all gone."
Nicky added that she and her older sister will be moving as soon as possible – to a more secure locale. She also voiced some suspicion that the burglar (or burglars) could be someone the sisters know – because they took personal possessions, such as photographs, while leaving behind expensive iPods, flat-screen TVs and digital cameras.