Brandon Yates, who suffered from mental health and substance abuse issues, was dead within a day of being arrested for sleeping in the backyard of a residence.

The man who killed Brandon Yates was known to be violent, and was already classified as “keep separate” — not to be placed in a cell with another person.

Ruis had been booked in the San Diego Central Jail after he was arrested Dec. 27, 2023 on charges of domestic violence; willful cruelty to a child; stalking; burglary; violation of a court order; committing a felony while out on bail; and violation of domestic violence temporary restraining order, according to the sheriff’s office.

Brandon Yates' family says deputies ignored his pleas for help while he was tortured to death by his cellmate last year.