Danny Joe Eberle

Joubert was executed on July 17, 1996, by the state of Nebraska via the electric chair.

In 1995, Joubert filed a writ of habeas corpus to the United States federal courts over the death sentences. His lawyers argued that the aggravating factor of "exceptional depravity" was unconstitutionally vague. The court agreed and the state of Nebraska appealed to the United States District Court for the District of Nebraska. They overturned the appeal, saying that he had shown sadistic behavior by torturing Eberle and Walden.

Joubert then confessed to killing the two boys and, on January 12, was charged with their murders. After initially pleading not guilty, he changed his plea to guilty. There were several psychiatric evaluations performed on Joubert. One characterised him as having obsessive-compulsive disorder and sadistic tendencies, and suffering from schizoid personality disorder. He was found to have not been psychotic at the time of the crimes. A panel of three judges sentenced him to death for both counts. Joubert was also sentenced to life imprisonment in Maine (which did not have the death penalty) in 1990 for the murder of Ricky Stetson after Joubert's teeth were found to match the bite mark.

On January 11, 1984, a preschool teacher in the area of the murders called police to say that she had seen a young man driving in the area. There are conflicting stories as to what occurred — whether the car was loitering or just driving around. When the driver saw the teacher writing down his license plate, he stopped and threatened her before fleeing. The car was not tan, but was traced and found to be rented by John Joubert, an enlisted radar technician from Offutt Air Force Base. It turned out that his own car, a tan Nova sedan, was being repaired.

Danny Joe Eberle disappeared while delivering the Omaha World-Herald newspaper on Sunday, September 18, 1983, in Bellevue, Nebraska. His brother, who also delivered the newspaper, had not seen him, but did remember being followed by a white man in a tan car on previous days. It was found that Eberle had delivered just three of the 70 newspapers on his route. At his fourth delivery, his bicycle was discovered along with the rest of the newspapers. There appeared to be no sign of a struggle. Joubert would later describe how he had approached Eberle, drew a knife and then covered the boy's mouth with his hand. He then instructed the boy to follow him and took him to his truck. He then took him to a gravel road outside of town.

In the city of Portland, Maine, on August 22, 1982, 11-year-old Richard "Ricky" Stetson had gone jogging. When he had not returned by dark, his parents called the police. The next day, a motorist saw the boy's body on the side of the I-295. It appeared that an attempt had been made to undress him, and he was stabbed and strangled. A suspect was arrested for the murder, but his teeth did not match a bite mark on Stetson's body, so he was released after a year and a half in custody. No additional leads were presented until January 1984.

Further investigation in Maine revealed two crimes between the pencil stabbing of the nine-year-old girl in 1979 and the murder of Stetson in 1982. In 1980, Ressler's investigation revealed that Joubert had slashed a nine-year-old boy and a female teacher in her mid-twenties who both "had been cut rather badly, and were lucky to be alive."

Joubert's parents divorced when he was six years old, and he went to live with his mother in Lawrence, Massachusetts. He was not allowed to visit his father and grew to hate his controlling mother. In 1974, she moved the family to Portland, Maine. He attended Cheverus High School.

John J. Joubert (July 2, 1963 – July 17, 1996) was a serial killer executed in Nebraska. He had been convicted of the murders of three boys in Maine and Nebraska.