Nathan Bradley Maddox, 35, of Zavalla, Texas, and his wife Krystal Renee Maddox were fatally shot on January 18, 2014, in the parking area outside Mount Carmel Baptist Church in Colmesneil, Texas. The couple had just completed a supervised visit with Nathan’s young daughter from a previous marriage when the attack occurred; investigators say the killings were a planned attack rather than a random act.

Investigators tied the murders to a bitter custody dispute between Nathan and his ex-wife Kristen Westfall. Members of the Westfall family — Kristen, her parents Lloyd Paul and Letha Westfall, and her brother Cameron — were implicated. Cameron cooperated with authorities and provided information that led to arrests. Cameron received a 10-year sentence for tampering with evidence; Lloyd Paul and Letha Westfall pleaded guilty to first-degree murder and received life sentences without parole; Kristen Westfall was found guilty and sentenced to life in prison without parole.

Nathan’s father, Jim Maddox, addressed the court and expressed forgiveness while also describing the family’s grief. Does anyone have information about Nathan, Krystal, or the custody dispute that could shed more light on what led to this planned attack?