Santiago "Pucho" Villalba Mederos, a known member of the Eastside Lokotes Sureno (ELS) gang, is wanted for his alleged involvement in several crimes committed in 2010 in Tacoma, Washington. On February 7, 2010, Mederos allegedly took part in the planning and execution of retaliatory actions on rival gang members. While looking for potential targets, Mederos encountered two innocent victims, not involved in any gang activity, in their car stopped at a stoplight. Due solely to the color of their vehicle, the brother and sister victims were chased while in their vehicle and, when they stopped at another stoplight, Mederos allegedly fired multiple shots into the car, killing the 18-year-old girl and seriously wounding her brother. On December 3, 2010, Mederos was charged with Murder in the First Degree, Attempted Murder in the First Degree, Conspiracy to Commit Murder in the First Degree, and Unlawful Possession of a Firearm in the Second Degree in the Superior Court of Washington for Pierce County and a warrant was issued for his arrest.
On March 25, 2010, Mederos and other gang members allegedly went to collect money from a person they knew. Mederos and other gang members allegedly broke into and ransacked that person's vehicle. Several innocent bystanders observed this situation and confronted the group. A fight ensued during which Mederos allegedly fired a single gunshot towards the bystanders, striking and killing an innocent 25-year-old male victim. On March 30, 2010, Mederos was charged with Murder in the Second Degree in the Superior Court of Washington for Pierce County and a warrant was issued for his arrest.
On September 30, 2016, a federal arrest warrant was issued for Mederos in the United States District Court, Western District of Washington, Tacoma, Washington, after he was charged with unlawful flight to avoid prosecution.