Diddy's got a big headache to ring in the new year ... the L.A. home he owns where his late soulmate, Kim Porter, died was hit by burglars.
Law enforcement sources tell TMZ ... someone pried open a side door and entered his Toluca Lake home, triggering the security system.
We're told a caretaker discovered the break-in and it was clear -- someone rummaged through the house.
Cops took a burglary report and someone from Diddy's family will have to take a look around to see what, if anything, is missing.
As you know ... Kim, a model and actress, dated Diddy off and on for 13 years and they had 3 children together, including two daughters and a son.
Kim was found dead in the home back in November 2018 at the age of 47, after losing her battle with pneumonia. Diddy isn't there much, and that could be a reason for the break-in. TMZ broke the story ... Dr. Dre's house was hit hours after we reported Dre was in an ICU unit after suffering a brain aneurysm.