San Francisco — Bone-chilling new details have emerged in the alleged murder of a 58-year-old tenant by his wealthy landlord, who prosecutors say orchestrated a cold-blooded execution-style killing in order to sell his Sunset District home.

Retired dentist Phillippe Chagniot is accused of murdering his longtime tenant, Eric Bigone, in an early-morning ambush at the $1.3 million single-family home in San Francisco’s quiet Sunset beach neighborhood. Authorities allege Chagniot was desperate to vacate the property so he could sell it.

According to prosecutors, the retired landlord allegedly hatched an elaborate plot to eliminate Bigone after becoming frustrated with the long-term tenancy. The shocking case has drawn widespread attention due to the stark contrast between the suspect’s professional background and the brutality of the alleged crime.

Chagniot, who managed his family’s rental property, is accused of carrying out the killing in a calculated manner. Details released by prosecutors describe a premeditated ambush that ended with Bigone being shot to death.

The victim, Eric Bigone, had lived in the home for years. His death has left the local community stunned, particularly given the seemingly ordinary residential setting of the crime.

Photos circulating in connection with the case show Bigone smiling in a casual selfie labeled as the “victim,” while Chagniot appears in what is marked as a “suspect” image.

San Francisco prosecutors say the evidence points to a landlord willing to go to horrifying extremes to clear his property for sale. The case is still unfolding, with investigators continuing to piece together the full timeline of events leading to the fatal confrontation.

This alleged murder highlights the intense pressures of San Francisco’s competitive real estate market, where even a single tenant can stand in the way of a lucrative sale.

Authorities have not yet released the exact date of the killing or additional forensic details, but the case is expected to draw significant public interest as it moves through the court system.