Two Teenage Boys Murders Parent and Three Other Siblings

These 2 Oklahoma teenagers, 18 year old Robert Bever and his 16-year-old brother, Michael Bever, have been accused of stabbing and killing 5 family members.

They were arrested after their 13-year-old sister who survived the attack identified them as the attackers in the Wednesday night massacre in Broken Arrow, OK.

The news comes as it was revealed the one of the victims, 12-year-old Daniel, had called 911 just before dying alongside his parents, David, 52, and April, 44, and siblings Christopher, 7, and Victoria, 5.

Although police originally said a 911 call from the home was silent, resulting in a welfare check, it has now been revealed in documents filed to support the teenager's arrest that a caller from the home was able to tell police that 'their brother was attacking their family'.

The family were found dead at 11.30pm on Wednesday in their luxurious house in Broken Arrow, southeast of Tulsa. Crystal Bever, 13, is currently in a serious but stable condition in hospital.

Her two-year-old sister, Autumn Bever, was discovered unharmed and is in state custody. She was allegedly born prematurely and her parents had recently started a nonprofit to help other families who have premature children.

Investigators said a 12-year-old male called 911 at 11:30 p.m. on Wednesday and said they needed help because their brother was attacking the family. When officers arrived to the 700 block of Magnolia Court, they found blood on the porch and could hear a faint female voice inside asking for help.

When they made their way inside to the gruesome scene, they found the girl, who had been stabbed multiple times, the document says. The 12-year-old who called 911 was dead, they said.

"The young girl was still alive and made statements to the officers that her brothers [were] responsible for attacking her and her family," the arrest report says.

As reported earlier, police and a K9 officer were able to track down Bever and his 16-year-old brother in a wooded area behind the home, and the new report reveals they found fresh footprints in the back yard. The two were arrested and placed in the Broken Arrow city jail then transferred to the Tulsa County Jail on Friday.

Bever was booked on five first-degree murder complaints and one count of aggravated domestic assault and battery with a deadly weapon. In his mugshot, Bever appears to have blood splatters and mud on his face, and BAPD Cpl. Leon Calhoun said that many of the officers who have been involved in the investigation are disturbed by his demeanor.

"He has a smirk on his face …I don't know if there's any remorse whatsoever based on that picture," Calhoun said of Robert Bever's first mugshot. A second mugshot was taken once he was transferred to Tulsa County.

At this time, the youngest brother's name has not been made public in any news releases sent out by Broken Arrow police. A Tulsa County jailer, however, identified him to News On 9 as Michael Bever.

The 13-year-old girl survived surgery and is said to be stable at a local hospital.

Police said on Thursday that multiple knives and a hatchet were found in the home and are believed to be the murder weapons.