Slack Co-Founder’s Teen Found Safe in a Tenderloin Van as California Charged Two Adults With Child Abduction
Mint Butterfield was 16, gone for six days, and found uninjured in a white van in San Francisco’s Tenderloin a little after 11:30 p.m. on April 27, 2024. The Marin County Sheriff’s Office said the teenager had left the family house in Bolinas on the night of April 21 with a note, and that investigators had treated the case as a voluntary missing person who was also at risk. Two adults were charged anyway. California does not let a minor sign away a custodian’s rights by climbing into an adult’s van, and it does not treat “they wanted to go” as a defense to child abduction.
Mint is the child of Stewart Butterfield, who co-founded Slack, and Caterina Fake, who co-founded Flickr with him. Their stepfather is Jyri Engeström. Mint uses they/them pronouns. Slack is the workplace app Salesforce agreed to buy in December 2020. The famous names are why the search was on television within a day. The statute the district attorney reached for is older than any of those companies. A later account in The Daily Beast said officers found the teenager under a mattress in the back of the van. The sheriff’s public line was simpler: safe, reunited, and in the company of a 26-year-old the office called an adult friend.
The San Francisco Police Department posted on April 28 that Mint had been located and reunited with family, and thanked people who had spread the flyer. The arrest happened on Eddy Street. Christopher “Kio” Dizefalo, 26, a parking valet, was in the van and was booked into the Marin County Jail. The San Francisco Chronicle reported that Mint did not have a phone or a car at the Bolinas house, which left open the plain question of how a teenager gets from a coastal Marin town to the Tenderloin without either. Deputies believed the destination had been the Tenderloin because of earlier visits. That neighborhood was, in the spring of 2024, still the place the city had failed to close as an open market for fentanyl. The family’s statement, given to the San Francisco Standard, thanked “the seasoned law enforcement officers who understand the very real threat of predators who use the allure of drugs to groom teenagers.”
What the Complaint Actually Says
On April 30, 2024, Marin County District Attorney Lori Frugoli charged Dizefalo and a second adult, Sarah Atkins, with child abduction and with contributing to the delinquency of a minor. The complaint, as quoted by KRON and the Chronicle, tracks the language of California Penal Code section 278. It accuses the defendants of willfully and unlawfully, without a right of custody, maliciously taking, enticing away, keeping, withholding, and concealing a child, with the intent to detain and conceal that child from a lawful custodian, “to wit: Caterina Fake and Stewart Butterfield.” Section 278 is the child-stealing felony. It is not the kidnapping statute, Penal Code section 207, which is built around force or fear. The distinction is the whole case. A teenager who leaves a note can still be the victim of 278 if an adult entices them out and then hides them from the people who have legal custody. Contributing to delinquency, typically charged under section 272, is the misdemeanor that sits beside it when the state says the adult encouraged the child not to go home.
Booking records, the New York Post reported, also listed suspicion of unlawful sexual intercourse with a minor. California’s age of consent is 18. Penal Code section 261.5 makes intercourse with a minor a crime even when the minor says yes, and the penalties step up with the age gap. A 26-year-old and a 16-year-old are a decade apart. The public stories about the filed complaint centered on abduction and contributing to delinquency. The sex-offense suspicion was in the jail log. Those are different stages of a case, and conflating them is how a charge becomes a fact before a jury sees it. A sheriff’s spokesman told the Post there had been a “quasi-dating relationship” and that this was not a classic kidnapping. Mint told investigators they had left on their own. Neither statement erases 278. A quasi-dating relationship between a 26-year-old and a 16-year-old is the fact pattern the age-of-consent law was written to reject.
Dizefalo appeared in Marin County Superior Court before Judge Kelly Simmons in a yellow jumpsuit, a scythe tattooed on his face, and was ordered to have no contact with Mint. Bail was set at $50,000. Stewart Butterfield attended by Zoom and did not speak. A plea date was pushed after Dizefalo became ill, the Post reported. Atkins was not in the van when deputies arrived. News accounts described her as the van’s owner and as someone who had been in a relationship with Dizefalo. A warrant went out. As of the first days of May 2024 she was not in the jail log. The Daily Beast later reported that a lawyer had approached the district attorney about Atkins turning herself in and testifying against Dizefalo, and that she described herself as someone he had exploited. That is her account, offered through a lawyer, not a finding.
The Search That Television Got, and the Statute Everyone Else Gets
Money put this flyer on national news. The mechanics are the ones The AEGIS Alliance has documented in cases with no billionaire in the caption: an adult who knows where a teenager can be found, a neighborhood where disappearing is easy, and a legal argument over whether willingness is the same thing as consent. It is not. Operation Guardian in Snohomish County, Washington, ended with 21 men charged in child sex cases that never depended on a famous last name. Operation Bad Santa in New Jersey charged 12 people on the same kind of docket. Older files on abuse networks hiding in plain sight and on a Disney executive charged with child sex abuse are the same subject in different years. The Bolinas case is unusual only because the custodians named in the complaint built Flickr and Slack.
News coverage of the charges runs from the April 30 complaint through the early May appearances. The AEGIS Alliance did not find a later published verdict, plea, or dismissal that would let anyone outside the Marin courthouse say how the counts ended. That gap is part of the public record, not a hint. Bail, a stay-away order, and a warrant are the documents that were released. What happened to them after the cameras left is a question for the docket, and the docket was not in the press releases. Dizefalo’s background, as former acquaintances described it to the Post, ran from a Christian high school in El Cajon to narcotics and a van. Those are anecdotes from people who said they knew him. They are not the case. The case is the complaint’s list of verbs: take, entice, keep, withhold, conceal.
A note on a kitchen table can be a teenager’s decision and still be the start of a felony if the person waiting on the other side of the note is 26 and the destination is a van the parents cannot find. The sheriff was careful. The district attorney was less romantic. Frugoli’s office charged concealment from Fake and Butterfield by name. SFPD’s tweet was the only part of this story that needed no statute: the child was home. More of this beat lives in The AEGIS Alliance’s Crime News coverage.
