Robert Orsi murdered his wife inside their home. He also shot the couple's 12-year-old triplet daughters and killed one of them.
As reported by AL, the 51-year-old US Air Force veteran killed his wife Charlene Ann Orsi, 44, and one of the triplet daughters at their home in Wetumpka, Alabama recently.
The other two girls, who were shot multiple times, survived. They have undergone numerous surgeries and are expected to make a full physical recovery.
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"They underwent surgery last night and everything seems to be OK and they came through alright," Elmore County Sheriff Bill Franklin said, according to AL
"From my understanding, the doctor said that it was promising for both of them. That's good news."
He added: "You can imagine, though, the mental trauma involved. I mean, that's their dad."
After the tragic incident, which occurred nine days after Charlene filed for divorce, Robert set the house on fire and killed himself before police arrived.
The investigation is still ongoing. According to Franklin, the authorities are looking into allegations that Robert was using illegal drugs.
"What we were being told is the catalyst of (the divorce filing) was illegal drug use from the father," he said.
Franklin explained that he's waiting to release the minor victim's name until after an examination from the Alabama Department of Forensic Sciences, AL reported.
"They will be looking at the three individuals and obviously they can tell us the matter of death," he said. "We seem to believe that it will probably show the father died from a self-inflicted gunshot wound. We cannot rule out the heat exposure of the father."
The two injured girls were taken to Baptist Medical Center South in Montgomery.
Though it has not been confirmed where the girls were shot, Franklin stated that one of them suffered multiple gunshot wounds.
"By the grace of God, these other two children were able to escape the house while he was spewing a flammable liquid which we believe was gasoline throughout the house," said Franklin. "They were able to get up and scamper out of the house."
The couple's 13-year-old daughter was able to escape to a neighbor's house without being shot.