On the evening of October 30, 1993, Phoenix was to perform with his close friend Michael “Flea” Balzary from the Red Hot Chili Peppers onstage at The Viper Room, a Hollywood nightclub partly owned at the time by actor Johnny Depp.
Phoenix had returned to Los Angeles early that week from Utah to complete the three weeks of interior shots left on his last project Dark Blood, a film that was finally completed in 2012.His younger sister Rain and brother Joaquin had flown out to join him at the Hotel Nikko (now the SLS Hotel) on La Cienega Boulevard. Phoenix’s girlfriend, Samantha Mathis, had also come to meet him. All were present at the scene of Phoenix’s death.
During the early morning hours of October 31, 1993, Phoenix collapsed outside and convulsed for over five minutes. When his brother Joaquin called 9-1-1, he was unable to determine whether Phoenix was breathing. His sister Rain proceeded to give him mouth-to-mouth resuscitation.(wiki)