In the quiet town of Sallisaw, Oklahoma, a grim discovery was made around midnight on March 3, 2015. A passing driver noticed a car that appeared to have veered off West Ruth Street and stopped in front of Armstrong Bank. Inside, authorities found the body of 56-year-old Karen Gregg in the driver's seat. It was quickly apparent that this was no ordinary car accident.
Investigators from the Sallisaw Police Department and the Oklahoma State Bureau of Investigation arrived at a scene that pointed towards a violent end. A single bullet hole pierced the rear passenger side window, and Karen Gregg had sustained a gunshot wound to the right side of her face.
As the investigation unfolded, a tragic narrative began to take shape, centering on Gregg's own family. Her son, Jessie Mosby, had recently moved in with her. Concerns had been raised on the evening of March 2nd when Gregg left her home to look for Mosby, who had departed with a pistol he had recently purchased. She never returned. Evidence collected at the scene included a spent 9mm shell casing and a fresh footprint, while surveillance footage from the area was also secured. The focus of the investigation soon turned directly to Mosby.
Following the discovery of his mother's body, investigators located Jessie Mosby at a relative's house in Sallisaw. A search of his bedroom uncovered live ammunition that matched the casing found at the crime scene. A crucial piece of evidence emerged when a homeowner on Drury Lane reported finding a Ruger 9mm pistol in their front yard. The serial number on this firearm was a match to the gun box found in Mosby's room.
Based on the mounting evidence, Jessie Mosby was arrested and charged with the first-degree murder of his mother, Karen Gregg. He was taken to the Sequoyah County Jail and held without bond. Court records indicate that his arraignment was scheduled for March 10, 2015, and that a mental evaluation was later ordered for him as the legal proceedings began.
