NATCHEZ — The man accused of shooting three members of his family and killing one of them last week “just went off,” sheriff’s office investigators said Tuesday.

The Cloverdale shooting on Dec. 21 left one dead and three others wounded was likely the result of a family dispute, investigators said.

Adams County Sheriff’s Office Chief Deputy Jerry Brown said the alleged shooter, Leroy Henderson, named an ongoing family dispute as the reason for the violence just days before Christmas Eve.

Henderson is charged with one count of murder and three counts of attempted murder after allegedly shooting or stabbing four family members.

Brown said the sheriff’s office believes Henderson to be in a stable state of mind and that they have detected no signs of mental illness.

Jeanette Proby, 48, was pronounced dead at the scene on Lower Woodville Road.

Adams County Coroner James Lee said last week that Proby appeared to have died from a gunshot wound to the chest.

Proby was Henderson’s stepdaughter, the sheriff’s office reported.

“We think he just went off,” Brown said. “After talking to him, he said (the dispute) had been ongoing for years. He’s trying to justify what he did.”

Brown said he would not release the nature of the argument, as it was a personal matter for the family.

Henderson was arrested with a .45-caliber Hi-Point handgun, which he legally owned, Brown said.

Another alleged victim was in critical condition in the Rapides Regional Medical Center Friday after suffering a chest wound.

Sheriff Travis Patten said Thursday that the individual would likely be paralyzed from his wound.

Brown said no update on the victim’s condition was available Tuesday.

Neither of the other two reported victims suffered life-threatening injuries.

Henderson was being held without bond at the Adams County Jail as of Tuesday afternoon.