Fans around the world are mourning Liam Payne, the former One Direction band member who tragically died yesterday at the age of 31.Now, an autopsy has revealed the singer’s official cause of death.Payne died on October 16 after falling from the balcony of his third-floor room at the CasaSur Palermo hotel in Buenos Aires, Argentina. After the singer was taken to the city’s morgue, medical professionals performed an autopsy to determine an official cause of death.Liam Payne: Cause of DeathAccording to a report from National Criminal and Correctional Prosecutor’s Office No. 14., Payne died from “polytrauma, internal and external hemorrhage.”