Colin Kroll, the founder of Vine and HQ Trivia, has died from a suspected overdose in his Manhattan apartment on Sunday at the age 34.
Emergency services were responding to a well-being check round the entrepreneur's New York home when they found him unconscious and unresponsive and he was pronounced dead at the scene.
Nick Kroll, who had previously worked at Twitter, was one of the creators of Vine which was launched in 2013. The six-second short-form video hosting platform transformed the way video content was created, shared and consumed. HQ Trivia, Kroll's most recent endeavor, was a live streaming quiz app which allowed players to participate at no cost and win real money. The app was incredibly popular at the start of 2018, with some games drawing in up to two million players, although its popularity had waned in the second half of the year.
Following the news of his death, Kroll's co-founder on both Vine and HQ Trivia, Rus Yusupov wrote in a Twitter post: "So sad to hear about the passing of my friend and co-founder Colin Kroll. My thoughts & prayers go out to his loved ones. I will forever remember him for his kind soul and big heart. He made the world and internet a better place. Rest in peace, brother."
The New York medical examiner's office will reveal the official cause of his death.