At least one of the two Oklahoma brothers accused of killing their parents and three siblings in their home last month may have made plans for the murders and kept the information on a thumb drive, police said in documents released Friday.
Robert Bever, 18, and his 16-year-old brother, Michael, are charged with five counts of first-degree murder in the attack on their family in their Broken Arrow home on July 22.
Police went to the home late that night after one of the young victims called 911 and said his brother was attacking family members. The boys’ parents, David and April Bever, and the boys’ three siblings — including the 911 caller — between the ages of 5 and 12 were found stabbed to death, police said.
Police said that when they arrested the brothers in a wooded area near the home, "one of the suspects spontaneously uttered that plans of the killing was on a thumb drive in one of the bedrooms." The contents of the thumb drive were not disclosed.
Robert Bever and his brother have been charged as adults. They have pleaded not guilty.
Officers who responded heard faint cries for help and found a 13-year-old girl stabbed but still alive inside the home, and she identified the killers as her brothers, police said. A 2-year-old was found unharmed.