Investigators said at the time of Raymond Boodarian's arrest that they were working to determine if he had any connection to Kaye and Deluca, and if he was involved in any past calls for service at the couple's residence.

Robin Kaye and her husband Thomas Deluca were killed in an Encino shooting on July 14. Learn about the investigation and what we know so far

Though the house was well fortified, police said, the suspect managed to get in through an unlocked door. He allegedly confronted the couple when they entered.