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News Release

Wednesday, July 28, 2010

Media Relations

Illegal Cosmetic Operation NR10320rh


Today, LAPD detectives held a press conference in connection with the illegal cosmetic operation described below.  On the morning of July 23, 2010, 22-year-old Pacoima resident Mayra Contreras had a cosmetic procedure during which she received silicone injections. Later that day, she felt ill, was taken to a hospital and died the next day.  Detectives know that Contreras had previously received similar injections from the Viveros sisters, and they believe she received additional injections on the morning of her death.  

The official cause of Contreras’ death has not yet been released, and the sisters haven’t been charged with her death at this time.  However, since they were both arrested last month for practicing medicine without a license and neither showed up in court on July 26 for their arraignment, detectives need to question them and request that anyone whom the sisters treated contact them immediately by calling LAPD’s Mission Division homicide detectives at 818-838-9810 or the Crime Stoppers Hotline at 1-800-222-TIPS (8477).    

Los Angeles:  Los Angeles Police Department Foothill detectives have arrested two sisters for medical malpractice.  

Yesterday, at around 10 a.m., 53-year-old Guadalupe Viveros and 50-year-old Alejandra Viveros were arrested in the 13100 block of Mira Mar Drive.  They were charged for unauthorized medical practice without a license, and both are being held in lieu of $20,000 bail.   
Investigators of the Foothill Division’s Predator Apprehension Detail conducted an undercover operation and identified Guadalupe Viveros, and her sister, Alejandra Viveros, as individuals running an illegal “Cosmetic Surgery Fillers” operation in the Sylmar area of the San Fernando Valley.

Victims identified have complained of becoming ill as a result of being injected by these fillers.  In some cases, these fillers have hardened into solid plastic and have developed infections in the victims.  The suspects specialize in cosmetic filler injections to the buttocks and facial area.  It is believed that the two suspects have a long list of clientele in the San Fernando Valley and the surrounding area.

Guadalupe Viveros, who claims to be a physician in Mexico, is not licensed to practice medicine in the United States.  Alejandra Viveros obtained the clientele for Guadalupe Viveros.

LAPD Foothill Division Predator Apprehension Detail detectives suspect there might be additional victims and are asking them to come forward.

Anyone with information leading to the identity of additional individuals falling victim to Guadalupe and Alejandra Viveros are urged to contact the Foothill Area Predator Apprehension Detail at 818-834-3115. During non-business hours or on weekends, calls should be directed to 1-877-LAPD-24-7.  Anyone wishing to remain anonymous should call Crimestoppers at 800-222-TIPS (800-222-8477).  Tipsters may also contact Crimestoppers by texting to phone number 274637 (C-R-I-M-E-S on most keypads) with a cell phone. All text messages should begin with the letters “LAPD.” Tipsters may also go to, click on "webtips" and follow the prompts.