On May 2, 2012, 16-month-old Lilly Lynn Mederos was killed during a violent domestic dispute that became a mass shooting in a Gilbert, Arizona subdivision. The shooting left five dead, including the shooter. Lilly was found alive inside the home but died later at a local hospital.

Authorities say the attacker was 39-year-old Jason Todd Ready, identified as the gunman who shot and killed Lilly’s grandmother, 47-year-old Lisa Lynn Mederos, Lilly’s mother, 23-year-old Amber Nieve Mederos, and Amber’s boyfriend, 24-year-old Jim Franklin Hiott, before taking his own life. A 911 call from the residence captured the sounds of the incident. Investigators linked the attack to an escalating domestic dispute; Ready had a reported history of domestic violence though no prior charges were filed.

Does anyone have information about the family, the household dynamics that day, or memories of the neighborhood that could shed light on what happened leading up to the shooting?