UPDATE: The jury finds Aaron Lawson guilty on all counts.
EARLIER: A man charged with first-degree murder in the deaths of Eddie and Debbie Phillips took the stand in his own defense Friday.
The Phillips were shot three times each when they were killed outside their Cleveland home in 2011. Lawson recalled what happened that day to the jury.
"At first I had two (hands). When it went off, I let go with my left hand and hit her upside the head and she let go of the gun," said Lawson.
Lawson stated he was "fed up" with the hostility between his family and the Phillips, and he acted in self-defense.
In closing arguments, the prosecutor said Lawson acted in cold blood.
"You folks are the last line of defense. Do not let him get away with this," said Stephen Hatchett, the prosecuting attorney. "Eddie and Deborah Phillips described by their neighbors as good people, go through the trouble of getting a concealed carry permit, going to the classes, paying the money, and they're shot down on their own yard by a convicted felon."
But Lawson's defense attorney said he couldn't have done that, in regard to disposing of evidence.
"He didn't dispose of (the clothing). He didn't throw it away. He didn't wash it. He continued to wear it in his panic, in his not knowing what to do in this horrible situation that developed," said Randy Rogers. Lawson's defense attorney.
Investigators said a custody battle over the couple's 14-year-old granddaughter led to the murder.
Testimony this week covered Lawson's relationship with his 14-year-old daughter and possible mental problems. Both were sticking points for the defense during closing arguments Friday afternoon.
"If you don't find the insanity defense is available to Mr. Lawson, then (with) the third count of possessing a firearm by a person who is convicted of a felony, he is guilty," said Rogers.
After four days of trial, the jury made the unanimous decision to find Lawson guilty on both counts of first degree murder.
The family, who sat quietly throughout the trial, became overwhelmed with emotion following the announcement.
Lawson remained stoic when he was led out of the courtroom.
Hatchett says though nothing can bring the Eddie and Debbie Phillips back... justice was served.
"This was a senseless crime of violence, so I'm happy justice was done here. Hopefully the family can start the healing process from this. Nothing that happened in this courtroom will bring their family back. But at the same time, the citizens of Bradley County saw justice done here today."
Lawson will have a sentencing hearing on March 24. At that point, it will be decided if he will face life in prison, with or without parole. By Briona Arradondo and Kelsey Bagwell