Police found the bodies of Inga, Casey, Levi, and Justin Barnes on the property. Justin has been named as the gunman in the shooting.
Multiple agencies responded on Friday afternoon to a possible hostage situation at Crossover and Gordon Hollow roads but instead found the four bodies on a nearby property.
Police say they believe Justin called the police to report the shootings.
Captain Chris Kelley with the Gravette Police Department said that the suspect was dead and all four died of gunshot wounds. He said the four dead were related and the father killed his two sons and wife.
According to a police report, one family member was not at the scene during the shootings.
Investigators found a used gun on the property.