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BROKEN ARROW, Okla. — A community in Oklahoma is trying to come to grips with the horrific murder of a family.

Police say five family members were stabbed to death in their home Wednesday night.

The victims include three siblings.

Police in Broken Arrow, Okla. were called to a home after a chilling 911 call was made by a young boy, according to KFOR.

KFOR reports authorities discovered the bodies of 52-year-old David Bever, 44-year-old April Bever, a 5-year-old girl, a 7-year-old boy and a 12-year-old boy.

Police arrested 16-year-old Michael Bever and 18-year-old Robert Bever for the crimes, according to KFOR. Authorities say one or both of them killed their parents, David and April, and their three siblings.

According to reports the killings could have extended past the Bever’s family, but the 911 call made by a boy who would ultimately be killed may have saved lives.

“He did save the life of his 13-year-old sister and his 2-year-old sister and possibly many others after that,” Broken Arrow Police Cpl. Leon Calhoun told KFOR.

Police told FOX23 the call came from either the 7-year-old or 12-year-old boy.

After that call police arrived to find the five bodies. A 13-year-old sister was also seriously injured, but she’s recovering. A two-year-old girl was found unharmed.

According to KTUL, law enforcement sources say Robert Bever has given a full confession, stating that the murders were planned and that the killing wasn’t supposed to end there.

The confession was given matter-of-factly, with no hint of compassion or remorse, officials said.

Robert Bever is scheduled to appear in court on Sunday.