In May of 2021, a police officer's (Bruno Portillo) wife (Reyna  Gonzalez-Amador) set out to go on a shopping trip in Atizapan de  Zaragoza, Mexico with an elderly man (Andres Mendoza) who had become a  friend of the family. He was also somewhat of a charity case for the  couple and their children, as he seemed dirty, poor, and down on his  luck. They often invited him to their home for meals, and so he was not  so lonely. Since he seemed as though he meant them no harm, Reyna wanted  his help shopping for supplies for her cell phone business on May 14,  2021. When she had not returned that night, Bruno knew exactly where to  turn his attention, Andres. Bruno reported his wife missing, but with  barely any help from police at first due to their lack of funding, etc.,  he took it upon himself to obtain the police street surveillance  footage of the street where Andres lived. Reyna was seen entering Andres  house, but never exiting with him to go shopping. This is when Bruno  knew he had to take officers there to do a search for his wife. After  Reyna had been missing for four days, a search was finally able to be  conducted, and what Bruno found was horrifying. What was found after  this discovery was also never expected and launched and investigation  into one of Mexico's most prolific serial killers whose reign of terror  has lasted decades.

Sources:

Infobae (2022, March)