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when were fingerprints first used in crime detection
At Buenos Aires, Argentina in 1892, Inspector Eduardo Alvarez made the first criminal fingerprint identification
from whom did inspector eduardo alvarez learn the fingerprint identification method
Inspector Eduardo Alvarez had learned to compare fingerprints from Juan Vucetich
who was juan vucetich
Juan Vucetich was a fingerprint researcher, statistician and the head of the bureau of Anthropometric Identification at the Central Police Department in La Plata, Argentina
when did juan vucetich create the fingerprint identification method
In 1891, Juan Vucetich created a classification system and method to individualize prisoners using fingerprints. These are considered the first uses of fingerprint science by law enforcement.

Question: where was the researcher from
Self-contained rewrite: where was juan vucetich from