Kardashian Homes Robbed of cash and valueables

Khloe Kardashian recently realized that her Tarzan home that she shared with her estranged husband Lamar Odom had been robbed of jewelry worth a whopping $250,000.

Fastforward to a few months ago, older sister Kourtney realized that she had robbed of cash worth $50,000.

Sources told TMZ that the money was stolen from inside Kourtney's Calabasas home, following an appearance gig that paid in cash. Kourtney believes it was an inside job.

It is said that Kourtney left the money in a safe place in the house for a couple days -- and when she finally went to deposit the loot ... it was gone!

Given the timing and the fact that Kourtney and Khloe work with so many of the same people, the police believe the two thefts are connected.

Cops plan to question people who had access to Kourtney's house around the time of the theft -- and they'll give special attention to people who ALSO had access to Khloe's house.