Sources very close to the Kardashians tell The Blast the incident went down early Friday morning at Kimye's Bel Air mansion when a guy tried to access some vehicles belonging to staff at the end of the long driveway.
We're told the thief barely had time to ransack the cars before security saw what was going down and ran them away from the property.
The LAPD tells us they responded to the Kardashian's home at 510AM after a call came in for a theft for a motor vehicle. Cops say a witness at the scene observed one suspect enter and exit a vehicle, and then fled the location.
Cops also say a second suspect was hiding in the bushes, who also fled.
Our sources say none of the Kardashian's property was trashed ... but unfortunately the guy made off with an iPhone out of a staffer's car.
However, tons of footage and crystal clear pictures of the thief were captured by the property's security cameras and been handed over to police, who are now actively investigating the theft. They were spotted leaving the property a short while ago.
Cops also tell us they believe this is an isolated incident and not related to the ongoing string of celebrity burglaries.