16-year-old heiress of billionaire and Slack co-founder is missing: she may be in one of the most crime-ridden cities in the United States.

The daughter of two of Silicon Valley's most famous entrepreneurs, Slack co-founder Stewart Butterfield and Flickr photo-sharing site founder Caterina Fake, 16-year-old Mint Butterfield , has disappeared from her mother's home. She is wanted in one of the most crime-ridden areas of the United States, the Tenderloin in San Francisco.

The Daily Mail journalists describe this place as "an area synonymous with rampant crime and homelessness". It is unclear whether she was kidnapped or decided to run away from home on her own.

The "problem" child, as she has been described, has been known to use psychotropic drugs in the past. She attends a private boarding school in the Napa Valley, so it is unclear how she could have ended up in the dangerous city.

The Marin County Sheriff's Office posted an announcement with a photo of the missing girl on Tuesday. Mint was reportedly last seen on Sunday night around 10:00 p.m. in Bolinas. She was wearing a black sweatshirt, flannel pajama pants, and black shoes.

Mint was allegedly carrying a gray suitcase, which may indicate her intention to run away from home. The girl's parents are divorced. Police later reported seeing the girl in the Tenderloin area, 30 miles from Bolinas.

According to Forbes, the assets of the missing girl's father amount to 1.6 billion dollars. However, so far, law enforcement has not received any reports of kidnapping or blackmail.

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