Daniel Sancho, urged on by Edwin Arrieta’s sister, went to the Police station to denounce the disappearance of the Colombian surgeon. But the police already knew a lot. He knew that there was a dead man on the island, he had the receipt from the supermarket where the two knives to dismember him had been bought, and the cleaning products to get rid of the evidence of the crime, and the client’s image. So Rodolfo Sancho’s son gave them the information they were missing: the identity of the corpse.
After entering the police compound, the events unfolded quickly and the young Spanish chef ended up arrested and confessed the murder and dismemberment of Arrieta’s body. After escorting the investigators through the crime scenes, entered Koh Samui prisonspecifically, in the hospital module, where they must remain isolated for a minimum of ten days due to the covid protocol in Thailand. There a key event took place.
And it is that, as confirmed by the director of the prison, Daniel Sancho’s hair was cut, his characteristic mane. Something that they do to all prisoners, but in this case it is a very relevant fact. And it is that in the hair you can do analyzes that would reveal what has been consumed up to the last six months.
the hair test
This is something fundamental to know if the confessed murderer would be under the influence of some type of substancehence it would be convenient (and it is unknown if this has happened) if the prison authorities had kept samples of that hair.
He hair analysis is a technique up to five times more effective for detecting the remains of substances than urine tests, for example, since all the nutrients and substances to produce new hair go into the blood that flows to the hair root.
In addition, apart from the long time that scientists can go back to know the consumption (up to six months; the data from the urine analysis is only valid for days), it is about a test that has no option of external contamination nor can its results be altered by the products used for ordinary hygiene.
