A Poteau man drove to his twin sister’s home, killed her and her toddler, and was arrested the next day in Georgia, say investigators.

POTEAU, Okla. — An Oklahoma man accused of killing his twin sister and her 17-month-old daughter arrived at the woman’s home, stayed about four minutes and drove away, according to a probable cause affidavit that outlines a double-murder case now stretching from eastern Oklahoma to Georgia.

Grant Wilson, 31, faces two counts of first-degree murder in LeFlore County in the deaths of Gabrielle Wilson, 31, and her young daughter. The case matters now because investigators say key pieces of evidence came together quickly: a 4 p.m. emergency call, a bloody crime scene, neighbor surveillance that placed the suspect at the home at 9 a.m., and an arrest after deputies in Georgia stopped him hours later. Authorities have not publicly described a motive.

According to the affidavit, deputies with the LeFlore County Sheriff’s Office were sent to a home off Old Tarby Road on March 21 for what was first reported as a cardiac arrest. By the time they arrived, paramedics had determined the call involved gunfire. Inside, deputies found Gabrielle Wilson on her back with a gunshot wound through her chin. The affidavit says silver-colored shell casings were near her body, and investigators saw blood spatter on the floor and high on a wall behind her. In a bedroom, deputies found her toddler daughter with a gunshot wound to the head. The child was pronounced dead at the scene. What began as a medical call became a homicide investigation within minutes.

Investigators then turned to the hours before the killings. A neighbor’s security camera, according to the affidavit, showed a gray Honda Accord pulling up to the house at 9 a.m. and leaving at 9:04 a.m. Authorities identified the car as belonging to Grant Wilson, Gabrielle Wilson’s twin brother. The victims’ father later told investigators his son and daughter had a history of violent arguments and physical altercations, and he said Grant Wilson owned the same caliber weapon investigators believed had been used. That statement did not explain why the attack happened, and court records described in news reports do not lay out a detailed motive. But the father’s account helped push the investigation toward a family member very early in the day.

The case then shifted into a manhunt. Authorities issued an alert for the Honda, and traffic-camera data later picked up the license plate around 11:30 a.m. March 22 near the Atlanta airport, roughly 700 miles from Poteau. The Monroe County Sheriff’s Office in Georgia said deputies received a BOLO around 12:27 a.m. as the car moved south on Interstate 475. When deputies tried to stop it, the driver fled and a short pursuit followed before the vehicle stopped. The driver was identified as Grant Hoffman Wilson. Deputies said he had a pistol on him at the time of arrest. A search of the vehicle turned up two .40 caliber Glock handguns, along with a rifle, a shotgun, loaded magazines, ammunition, clothing and food supplies. Law enforcement has said the Glock pistols were consistent with shell casings found at the Oklahoma scene.

As the record grew, so did the picture of what investigators believe happened and what they still do not know. Official statements from the Oklahoma State Bureau of Investigation and local reporting fixed the deaths on March 21 and the arrest on March 22. The affidavit gives the strongest timeline now public: an arrival at 9 a.m., a departure four minutes later, and a later emergency call that sent deputies to the house in the afternoon. That leaves several questions unresolved, including what happened between 9:04 a.m. and the 4 p.m. call, whether anyone else saw or heard the shootings, and whether prosecutors will describe a clear motive when the case moves deeper into court. Officials also have not publicly detailed any prior police calls between the siblings.

The legal path ahead is more straightforward than the unanswered personal history. Georgia authorities said Wilson was being held in Monroe County after the stop while Oklahoma pursued extradition. Oklahoma authorities have said he is expected to face two first-degree murder counts in LeFlore County. In a brief public comment to local television, OSBI public information manager Hunter McKee called the case “a senseless crime” and said it had been heartbreaking for everyone involved. First-degree murder charges in Oklahoma carry the state’s most serious penalties, and the case is likely to move first through extradition and booking steps before formal court appearances in LeFlore County begin. Prosecutors have not announced whether they will seek additional charges tied to the interstate flight or weapons recovered in Georgia.

In Poteau, the facts in the affidavit land with unusual force because the suspect and one of the victims were twins. Family memorials described Gabrielle Wilson as a mother and daughter from a longtime local family, a reminder that the criminal case sits inside a much smaller story of loss. Yet the public record remains tightly focused on evidence: the blood spatter in the home, the shell casings near Gabrielle Wilson, the slug found in the toddler’s hair, the surveillance video and the vehicle stop outside Atlanta. Taken together, those details form the backbone of the state’s case. What they do not yet show is why the killings happened, and that missing piece may become central once prosecutors present the case in court.

The case stood Thursday with Grant Wilson accused in the deaths and authorities still working through transfer and charging steps. The next milestone is his return to Oklahoma for court proceedings in LeFlore County.

Author note: Last updated April 16, 2026.