Tech billionaire’s missing child found ‘in the back of a white van’

Mint Butterfield is child of Slack co-founder Stewart Butterfield (Picture: Getty)The teenage child of a tech billionaire who went missing in a notoriously dangerous part of San Francisco has been found.Mint Butterfield, the 16-year-old child of Slack co-founder Stewart Butterfield, went missing in the Tenderloin neighbourhood last Sunday.Mint, who uses they/them pronouns, was thought to have been carrying a grey suitcase when last seen in Bolinas, a community on the other side of the Golden Gat