In 1892, an Argentine lady Francesca Rojas was the first person to be apprehended for murder by using fingerprint evidence. She said her two daughters were killed by a mentally ill neighbor at their house in Necochea, a coastal town on the Atlantic. Quickly, the guy was taken into custody. Although it seemed to be a cut-and-dried case, fingerprinting pioneer Juan Vucetich was in charge of the Bureau of Identification at the regional headquarters in La Plata. Inspector Eduardo Alvarez was sent back to look at the case. The first inquiry was so sloppy that it shocked Alvarez. He discovered, for instance, that the accused guy had an ironclad alibi but had been too disoriented to provide it. Alvarez discovered a bloody fingerprint at the murder scene. He thought back to Vucetich’s presentation when fingerprinting was discussed and how useful it may be. Alvarez found an exact match between the bloody print and Rojas’s. Rojas admitted guilt when shown the blood on her hands, leading to her life sentence.
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