Mario Padilla, 34, was killed on February 8, 2015, in a detached garage on the 11000 block of Monte Vista Avenue in Montclair, California. Padilla and 33-year-old Livied Arturo Sanchez of West Covina were found bound with duct tape and shot execution-style in what investigators described as a backyard mechanics shop.

A third man, Edgar Rivera Calderon, also had been bound but escaped, running south down Monte Vista Avenue injured; his survival provided investigators with key information. Police said preliminary evidence tied the victims and suspects through illegal narcotics activity. Homicide Sergeant Bryon Kelly and the Montclair Police Department used witness statements and technical assets to identify suspects.

Two men were later charged in the killings: Richard Corry Roach, 37, arrested August 13, 2015, in Laughlin, Nevada, who waived extradition, and 35-year-old David Nash McKell, who was identified while in custody at the Los Angeles County Jail on an unrelated homicide. Investigators reported a third suspected participant, believed to be the getaway driver, remained at large. Has anyone with knowledge of activities in that neighborhood or information about the unnamed getaway driver come forward?