So sad to hear this news, but I figured it wasn't going to be a good outcome after hearing the search team was told not to convene tomorrow (today). FWIW in order to be charged with capital murder in the state of AR one must meet the following:
Arkansas law defines capital murder as a homicide committed under any of a number of defined circumstances:
Causing the death of another during the commission of a violent and major felony—such as robbery, rape, or kidnapping—under circumstances that show extreme indifference to human life
Causing the death of another in the process of committing arson
Purposely causing the death of another after premeditation
Causing the death of another while attempting to kill a law enforcement officer, teacher, or other public official in the line of duty
Purposely causing the death of another while incarcerated with the Arkansas Department of Corrections
Killing another in exchange for something or value or hiring another person to do so
Killing another by discharging a firearm from a vehicle
Causing the death of a person under the age of 14 under circumstances showing extreme indifference to human life
http://www.littlerockcriminaldefense.com/practice-areas/arkansas-death-penalty/