The trial is underway in the case of a Floyd County man charged with double murder.
Family members say it all began over a property dispute and ended with Berry Hall killing his niece and her husband.
Hall's family members who witnessed the shooting say they had several arguments with their neighbors in the time they lived there, and one day things went too far.
"The relationship between the two families deteriorated. They began to have squabbles. The kind of squabbles and fights that neighbors often have," said Floyd County Commonwealth's Attorney Brent Turner.
But the defense attorneys say it might not be that simple.
"Berry Hall's IQ is somewhere in the seventies which puts him at borderline intellectual functioning range," said defense attorney Steve Goble.
Hall's defense attorneys say it's not a question of who did it, but why, and if Hall was in his right mind when the shooting occurred.
Hall sat expressionless looking at the floor as his family members told the jury what happened that day.
"I heard a gunshot, you know, and then I heard screaming," said Hall's son Bobby Hall.
"I heard Alan scream 'Lisa they shot you'," said Hall's son Tony Hall.
"My brother poked his head out said something about dad was shooting," said Hall's stepson Matthew Hall.
Defense attorneys say Hall was mentally ill at the time because he was in a deep depression for being out of work for a long period of time.
The prosecution is seeking the death penalty against Hall.
The trial will continue Tuesday in Floyd County.