James Edward Pough

After the death of his mother three years prior to the shootings, Pough was said to have emotionally changed for the worse, saying that he had nothing left to live for and arguing that he would "take someone with him when he leaves this world". Frequently, he had violent outbursts, which were directed against his wife, Theresa, and twice he threatened her by putting a gun to her head. In January 1990, they separated, as Mrs. Pough feared for her safety, and on March 2, she was granted an injunction that disallowed Pough to get in contact with her for a year. As a consequence, he withdrew even more and rarely socialized.

In December 1988, Pough traded his old car for a 1988 Pontiac Grand Am, though he soon had difficulties to make his payments. As a result, the car was voluntarily repossessed by GMAC in January 1990. He received a bill for $6,394 (around $13,200 as of 2021) of outstanding fees in March, and again on April 6, which was the last contact between him and the office. About two months prior to the shootings, Pough purchased a Universal Brand M1 carbine at a local pawnshop.

At the time, the shooting at the GMAC office was the deadliest mass shooting committed by a lone gunman in Florida history, surpassing the murder of eight machine shop employees in Hialeah by Carl Robert Brown on August 20, 1982.

Due to Pough's violent behavior in the past, it was also ruled that he should never be allowed to own a gun, though this was never forwarded to police. As a result, Pough was not considered a felon and therefore was able to purchase several handguns, among them the Röhm RG-31 .38-caliber revolver he later used to commit suicide, which was registered with the police on June 4, 1979. In 1977, Pough appeared twice in court for charges of bad debt, and there was also an outstanding warrant for his arrest in a 1982 employment compensation fraud case.

On May 8, 1971, Pough got into an argument with his best friend, David Lee Pender, who had called his girlfriend a "bitch". In the following scuffle, Pough grabbed a .38-caliber revolver from his girlfriend's purse and shot Pender three times, who eventually died in a hospital. According to relatives, he never managed to get over the fact that he had killed his friend.

According to former schoolmates, Pough had affiliations with gangs during his time at school. He was arrested twice in 1965 for vagrancy, and twice again in 1966, once for attempted robbery and a second time for assault after he attacked a construction worker who owed him a quarter. In 1968, Pough was arrested for dangerously displaying a knife and was fined $75, and in July 1969, he was fined $10 after being charged for gambling. In 1970, he was arrested, but not prosecuted, for motor vehicle theft and vagrancy-prowling by auto.

James Edward "Pop" Pough (February 16, 1948 – June 18, 1990) was an American spree killer, who, on June 18, 1990, killed nine people and wounded four others in a GMAC (now Ally Financial) car loan office in Jacksonville, Florida, before committing suicide. The day before, he had killed an innocent woman and man on Jacksonville’s Northside, wounded two teenagers, and robbed a convenience store.

Pough, who was born on February 16, 1948, in Jacksonville, Florida and was the first of nine children, grew up in an area near Florida Community College at Jacksonville. As a child, Pough suffered from asthma and he had a close relationship to his mother, whom he helped out a lot after his father left the family in 1959. He attended a vocational school, but dropped out in his sophomore year. At the age of 18, he began working as a common laborer, which he remained as until his death.