Wealthy Woman in Helped Transport Safe, Guns After Murders

Police recover what is believed to be the safe stolen from a Byrd and Melanie Billings' home during a robbery that ended with their murders.

(ABC News/AP Photo)

15 Children Left Without Their Parents

The deaths of the Billings couple shocked the country because they had dedicated their lives to caring for disabled children. They had four children of their own but adopted 13 others, including children with Down syndrome and cerebral palsy. Two children died.

On Wednesday, the Billings' oldest daughter said she is shocked at the brutal killings that left her and her14 siblings parentless.

"I just can't believe that there's people in the world who are capable of this type of hate," Ashley Markham, 26, told ABC's "Good Morning America" today. "This is just unimaginable."

Markham's parents, Byrd and Melanie Billings, were shot to death July 9 in what police have called a well-organized, military style operation in which robbery was the primary motive. A safe was among the items taken from the home.

Two of the seven suspects charged with murder, 35-year-old Leonard Gonzalez Jr., and 28-year-old Donnie Ray Stallworth, had military training, police say. Stallworth worked in the Air Force's elite Special Operations Command with an aircraft maintenance squadron and Gonzalez was a former soldier in the National Guard,The Associated Press reported.

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Several of the suspects, including Gonzalez, have criminal records. Wayne Coldiron, 41, served two years in a Tennessee prison in the early 1990s after killing a man during a fight.

Gonzalez stood before a Florida judge Tuesday and defended himself, saying there was "no hard evidence that links [him] to the scene of the crime July 9."

But Gonzalez's former sister-in-law Jennifer Herkel feared his violent side and said he threatened her family over the Internet. "If he would have gotten away with this crime, my family would have been the next one you would be reading about shot in the house," she said.

The Billings were parents to 17 children, 13 adopted and four biological. Two children have died. Nine of them were at home when police say the murders took place.

Two Teens Last Major Suspects Taken Into Custody

At a press conference Tuesday, Markham stood with Escambia County Sheriff David Morgan when he announced investigators had taken all the major suspects into custody, including a 16-year-old and a 19-year-old.

There were "no direct ties" between the alleged murderers and the slain couple, but at least some of the individuals arrested had been on the Billings' property in the past, said Morgan.

One of the suspects, Leonard P. Gonzalez Sr., 56, owned a pressure-washing business and had hired three of the suspects as day laborers as he needed them, according to Morgan. Gonzalez Sr. is believed to have been the group's getaway driver, according to Morgan.

The four other suspects, including the 16-year-old, had worked at an auto detailing business in nearby Okaloosa County.

Coldiron had been on the Billings' property "at least one time," said Morgan.

It was not immediately clear what type of work Coldiron had performed for Byrd, 66, and Melanie, 43, Billings.

All seven will likely be charged with an open count of murder, and the juvenile will be treated as an adult, said Florida State Attorney Bill Eddins. A memorial for the Billings will be held Friday morning, with a burial to follow.