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By Janelle Griffith
Colin Kroll, the co-founder of HQ Trivia and Vine, was found dead in his Manhattan apartment on Sunday.
Police responded to a 911 call for a welfare check at the Spring Street apartment on Sunday, a New York Police Department Spokesman told NBC News. Kroll was 34, police said.
Police found Kroll unconscious and unresponsive in a bedroom of the apartment, the spokesman said.
He was pronounced dead on the scene, police said.
A drug overdose is the suspected cause of death, police said, but an investigation is underway.
Kroll was named the chief executive of HQ Trivia, a phone-based trivia platform, in September. Prior to that he worked at Twitter.