Sacramento church shooting suspect David Mora, 39, pictured after ‘killing his 3 daughters, 8, 10 & 12 and himself’

A CUSTODY battle turned deadly when a father killed his three daughters and the person assigned to supervise his visits with them inside a Sacramento church said police.

Authorities are investigating how the 39-year-old man managed to obtain the firearm despite having a restraining order against him.

Illeana Gutierrez Rios filed for a domestic violence restraining order against her then-boyfriend, David Fidel Mora Rojas back in May, according to Sacramento County court records. 

The order was granted for five years, allowing a mutual friend and a church member to chaperone Mora’s supervised visits with the couple’s three children due to his “mental instability,” according to court records.

The three deceased girls were identified by the Sacramento coroner as Samia Mora Gutierrez, 13, Samantha Mora Gutierrez, 11 and Samarah Mora Gutierrez, 9.

The chaperone that was also killed was Nathaniel Kong, 59.

Gutierrez Rios said she warned the court that Mora was dangerous and wanted a restraining order for her daughters as well, but Mora was granted supervised visitations on the weekends.

According to court documents, Gutierrez Rios claimed that Mora had been abusive for a decade. She says he had choked her, pushed her, thrown things at her and threatened to kill her.

Last April, Gutierrez Rios called the police after Mora had threatened suicide after an argument, according to court docs. He was admitted for a weeklong psychiatric hold and Gutierrez Rios had her daughters moved out of their Sacramento home.

Mora had fought against attempts at a protective order that would keep him away from his kids.