George Alan Kelly, 75, listens to closing arguments on Thursday in Santa Cruz County Superior Court in Nogales, Arizona. Kelly is charged with second-degree murder in the death of 48-year-old Gabriel Cuen Buitimea, who was fatally shot on Jan. 30, 2023 on Kellyโ€™s property. Kelly is also charged with one count of aggravated assault with a deadly weapon, in a case that has garnered national attention.

NOGALES, Ariz. โ€” A defense attorney for rancher George Alan Kelly argued Thursday that the investigation into the shooting of an unarmed migrant on Kellyโ€™s property was beset by flaws and โ€œconfirmation bias,โ€ and theorized that the victim was robbed and killed by a group of criminals.

โ€œThe investigators go out there already believing that this guy (Kelly) has confessed. They already have their suspect before they arrive at the scene,โ€ defense attorney Brenna Larkin told jurors on Thursday. โ€œNobody seemed to think maybe there are other crimes that took place here.โ€

Prosecutors countered that the evidence supports the most straightforward explanation: that one of the nine shots Kelly fired with his AR-47 killed 48-year-old Gabriel Cuen Buitimea.

โ€œSometimes the easiest answer is the right answer,โ€ prosecuting attorney Mike Jette told jurors.

Prosecutors and defense attorneys made their closing statements on Thursday, nearly four weeks into a trial that has garnered national attention.

Kelly, 75, is charged with second-degree murder in the death of Cuen Buitimea on the rancherโ€™s 170-acre property near the U.S.-Mexico border, east of Nogales.

Prosecutor gives closing argument in trial of an Arizona rancher charged with killing migrant

Before closing statements began, Judge Thomas Fink instructed the jury that they could consider lesser charges of manslaughter or negligent homicide, if they donโ€™t agree to convict on the second-degree murder charge.

Kelly fired his AK-47 after seeing a group of migrants passing through his Kino Springs property on Jan. 30, 2023, in what prosecutors say was an act of reckless disregard for human life.

Cuen Buitimeaโ€™s body was found, unarmed, 115 yards away from Kellyโ€™s home. But attorneys for Kelly claim the rancher saw another group of migrants, closer to his home, who were armed with rifles, and he fired warning shots over their heads.

Investigators found no evidence that a large group of migrants had been in the area, nor did they find bullet casings in the field that could account for the sound of a gunshot Kelly claims he heard that day.

Santa Cruz County Deputy County Attorney Mike Jette gave the stateโ€™s closing statement on Thursday in the case against Nogales rancher George Alan Kelly, who is facing a second-degree murder charge in the death of 48-year-old Gabriel Cuen Buitimea of Mexico. โ€œGabriel was judged that day and sentenced to death by the defendant,โ€ Jette told the jury.

The bullet that killed Cuen Buitimea was never recovered, though law enforcement found nine spent bullet casings from Kellyโ€™s AK-47 in his patio.

Defense attorney Larkin said Cuen Buitimeaโ€™s unzipped backpack, and a fanny pack with a broken buckle, indicate a possible robbery. Prosecutors said forensic experts found no evidence of a struggle, nor that his body had been dragged from where he fell.

Jette also highlighted inconsistencies in Kellyโ€™s initial reports to law enforcement, saying at various times that he saw between five and 15 men on his property. Kelly also initially told Border Patrol agents that a group of migrants was too far from his home for him to be able to see if they were armed. But he later told a detective that the migrants were running with weapons and pointed the weapons at him.

Prosecutor gives closing argument in trial of an Arizona rancher charged with killing migrant

Kelly earlier rejected a plea deal that would have reduced the charge to one count of negligent homicide if he pleaded guilty, the Associated Press reported.

The defense has said that Kelly and his wife had become increasingly fearful of smuggling activity and armed men on their property.

Prosecutors say Cuen Buitimea and a friend, Daniel Ramirez, who testified in the trial, went to the U.S. in search of roofing work that day. The pair was traveling with a larger group of migrants when they encountered Border Patrol agents. The group scattered, and Cuen Buitimea and Ramirez fled towards the U.S.-Mexico border, crossing through Kellyโ€™s property.

โ€œGabriel was judged that day and sentenced to death by the defendant,โ€ said Jette, who is deputy county attorney for Santa Cruz County and is running for Pima County attorney.

Jette asked jurors to consider how a โ€œreasonable personโ€ would behave in Kellyโ€™s situation, when deciding whether heโ€™s guilty of second-degree murder.

โ€œWhen you see two unarmed migrants walking southbound, beyond two fence lines, and you take your AK-47 and walk out and donโ€™t say a word, point it at them and shoot, would that be what a reasonable person would do in that situation?โ€ he said. โ€œThe answer has to be no.โ€

Court records show Cuen Buitimea had previously entered the U.S. illegally several times and was deported, most recently in 2016, according to the AP.

Throughout the trial, the jury heard from multiple witnesses, including Kellyโ€™s wife Wanda who testified that on the day of the shooting, she saw two men with rifles and wearing backpacks pass their ranch home. She did not hear the gunshot Kelly said he heard.

Brenna Larkin, defense counsel for George Alan Kelly, in court on Wednesday.

The jury also heard from Ramirez, a Honduran national who had known Cuen Buitimea for about a year. Kelly is also facing a charge of aggravated assault with a deadly weapon against Ramirez.

The defense highlighted inconsistencies in Ramirezโ€™s testimony, such as telling investigators that he and Cuen Buitimea were west of Nogales instead of east, and that they were much closer to the border, and to Kellyโ€™s ranch house, than where Cuen Buitimeaโ€™s body was found.

โ€œWhat does that mean? It means he wasnโ€™t there,โ€ Larkin said. โ€œIt means he is telling a story. Why? We donโ€™t know. But you canโ€™t be there and get it this wrong. It is not possible.โ€

Prosecutors sought to portray the inaccurate statements as understandable, coming from the traumatized victim of a crime, who had just seen his friend get killed and was nervous talking to law enforcement.

Prosecutor Jette said Ramirezโ€™ most relevant statements were consistent with the facts, and proved he was there, such as his description of Kellyโ€™s red horse and his recollection that Cuen Buitimea grabbed his chest after he was shot, before falling face forward to the ground.

Prosecutors displayed a photo of Cuen Buitimeaโ€™s body, after investigators had rolled him onto his back, showing his right hand still pressed to his blood-soaked shirt.

Larkin maintained that prosecutors failed to prove their case beyond a reasonable doubt.

โ€œItโ€™s not justice for Gabriel to hold the wrong person accountable for his death,โ€ Larkin told the jury at the end of her closing statement. โ€œIf you decide we donโ€™t really know what happened here, that means the verdict must be โ€˜not guilty.โ€™ โ€ฆ And the fact is, weโ€™re probably never going to know what happened to Gabriel, and we wonโ€™t know because the investigation in this case jumped to conclusions.โ€

Judge Fink excused the jury to begin deliberations at 2:40 p.m. Thursday.

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Contact reporter Emily Bregel at ebregel@tucson.com. On X, formerly Twitter: @EmilyBregel