Tech billionaire's 16-year-old daughter Mint Butterfield is found in the back of a white van one week after she vanished in crime and drug ridden district of Dem-run city

Tech billionaire heiress Mint Butterfield has been found by police after she vanished over a week ago in San Francisco. 

Butterfield, 16, is the only child of two Silicon Valley entrepreneurs, Slack co-founder Stewart Butterfield and Flickr founder Caterina Fake. 

The 16-year-old, who uses they/them pronouns, vanished from their mother's home in affluent Bolinas, on April 21, before Fake reported them missing the following day.

On Saturday evening, Marin County Sheriff's Office said they had located Butterfield  safe in the California city after being found with an adult friend of hers. 

Detectives say they learned Butterfield was associating with a Christopher 'Kio' Dizefalo, 26, who was known to drive a white van. After tracking down the vehicle, officers found Butterfield inside. 

Mint Butterfield, the 16-year-old child of billionaire tech CEO Stewart Butterfield, was found on Saturday night

Christopher 'Kio' Dizefalo, seen here, was arrested and booked in the Marin County Jail, with bail set at $50,000.

Caterina Fake, Co-Founder of Flickr speaks during the Bloomberg BusinessWeek 2010 Media Summit in New York City, on Wednesday, March 10, 2010

Stewart Butterfield speaks at his company's Frontiers conference at Pier 27 & 29 on April 24, 2019, in San Francisco

In a statement, Marin County Sheriff's Office said Butterfield was found uninjured and that she had run away from home voluntarily.  

After Dizefalo was interviewed by detectives, he was arrested and booked in the Marin County Jail, with bail set at $50,000. 

Police said earlier in the week that Mint was an 'at-risk' due to a reported previous threat of suicide. 

They said she had left the home of her mom with a suitcase and left a note indicating she had left the residence. Police believed she was in the Tenderloin area.

The troubled teen, who is said of have battled addiction problems in the past, attends a private boarding school in the Napa Valley. 

The Tenderloin is the center of the fentanyl crisis in San Francisco and is known  for squalid conditions, homelessness, crime, drug trade, and prostitution.

Mint's father, Stewart Butterfield, is currently worth $1.6 billion. Slack was acquired by Salesforce in 2021 for $28 billion and Butterfield left the company in 2022. 

Their mother is Caterina Fake, who started the created the imaging service Flickr with her then partner, Butterfield. They sold the image-hosting website to Yahoo in 2005.

Butterfield has since married Jen Rubio, co-founder of Away - an American luggage and travel accessories brand, and the pair have two young children 

In 2021, Butterfield purchased a $31.7 million mansion in Aspen, Colorado. The residence sprawls over a five-acre estate overlooking the Castle Creek Valley

Stewart Butterfield's $19 million San Francisco home located in the upmarket Presidio Heights

Since then, Fake has served on the board of several startups and is known as an angel investor in the tech world. 

Fake and Butterfield married in 2001 and remained together until 2007, when their child was born.

Butterfield has since married Jen Rubio, co-founder of Away - an American luggage and travel accessories brand, and the pair have two young children together. 

Fake is now in a relationship with Jaiku co-founder, Jyri Engestrom, and the couple share three children between them. 

In 2021, Butterfield purchased a $31.7 million mansion in Aspen, Colorado. The residence sprawls over a five-acre estate overlooking the Castle Creek Valley. 

The property boasts a generous home gym, a home theatre, a games room, a 500-bottle wine cellar, a tasting room, six en-suite bedrooms and a three-car garage.

Butterfield also owns a $19 million home in San Francisco, which has seven bedrooms, eight bathrooms and sits in the posh Presidio Heights neighborhood.