Sioux Falls John Doe
Sioux falls.jpg
Sex Male
Race Hispanic
Location Sioux Falls, South Dakota
Found February 24, 1995
Unidentified for 25 years
Postmortem interval Minutes
Body condition Recognizable face
Age approximation 30-50
Height approximation 5'6"
Weight approximation 140 pounds
Cause of death Not stated

Sioux Falls John Doe was a man who was found in South Dakota in 2005. He used multiple aliases and a social security card with the name Roberto Plateado Ramirez was found on his body, although this was found to be fictitious.


The decedent was found in Sioux Falls, where he had lived for three weeks before his death. The circumstances of his death are unknown, although he had been deceased for less than a minute before he was found. He had apparently lived in Minneapolis, Minnesota for five years before coming to Sioux Falls and may have had ties to Mexico based on his tattoos.

He was known to use the following names:

  • Juan M Trinidad
  • Carlos Armando Trinidad
  • Juan Marquez-Trinidad
  • Juan Enrique Trinidad-Marquez
  • Juan A Hernandez
  • Juan Hernandez-Rojas
  • Carlos Hernandez-Rojas
  • Cardenas Paulino Hernandez
  • Paulin Francisco Cardenas
  • Lorenzo Montefaro
  • Roberto Plateado Ramirez
  • Roberto R Plateado
  • Carlos Benado
  • Carlos Bernardo


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