(Newser) – Playboy model and "Queen of Snapchat" Katie May died mysteriously at age 34 in February—and a coroner has now placed the blame on chiropractic treatment she got days before her death. According to a death certificate obtained by TMZ, a blunt force injury sustained during a "neck manipulation by a chiropractor" tore an artery in her neck, which ultimately cut off blood flow to her brain and caused a stroke. Sources tell the gossip site May had fallen during a photo shoot and went to the chiropractor for treatment for what she believed was a pinched nerve. She had the stroke just three days after the appointment. (Read more celebrity death stories.)