After an autopsy Abismo Negro's death was ruled a drowning. There are numereous stories and rumors that in the last several years his drug use had gotten out of hand and that he would even wrestle for drugs (which suggests a much greater problem for sure), and/or share drugs in lockerooms (yet another problem in general for sure).
Drugs, pills, steroids & more, are easily obtained in Mexico which is definately not the place to go if one has drug related issues, yet too many do go.
AAA paid for his funeral, which was attended by numerous wrestlers and was covered by newsopapers and television.
His body was cremated and the ashes are being taken to his hometown of Villahermosa.
The article below, while in Spanish, does not really break any new ground, but says the "anxiety attack" occurred at 12:30AM last Friday, and early reports said 1:30AM.
It also says that it is assumed the anxiety attack was caused by the consumption of anabolics (Steroids)
Most of the story is similar to what has been reported her previously.
http://www.terra.com.mx/articulo.aspx?articuloId=801622