He was discovered by a Lincoln County deputy.
Deputies determined that only the two boys were present inside the home during the shooting.
Gregg made a court appearance on Wednesday, where her bond was set at $1 million.
Police ask public to please stay out of the area.
Suspect 22-year-old Joshua Taylor, barricaded himself in a nearby residence, where officers subsequently arrested him.
The coroner has been summoned to the scene, indicating that at least one individual has been killed.
At the scene, Channel3 NOW crews observed authorities surrounding a vehicle lying in a ditch.
Jackson police have apprehended three suspects.
The man is armed and dangerous and assaulted an officer of the law.
Both individuals were subsequently transported to Baptist Anderson Medical Center and are now in stable condition.