Overview

Last seen: December 2, 1971 — Ralph’s Corner Bar, Moorhead, Minnesota. He was believed to be heading home to Fargo, North Dakota.

Main circumstances: Tank left the bar on a bitterly cold night and never arrived home. Taxi drivers interviewed afterward did not recall transporting him. A family member later reported threatening calls before his disappearance, possibly connected to his insurance work; those calls reportedly stopped after he vanished. Multiple later sightings and unidentified-remains comparisons failed to locate him. No publicly identified suspect has been charged.

Detailed Case Breakdown

Kenneth Edward Tank: The 1971 Fargo–Moorhead Disappearance That Remains Unsolved

Kenneth Edward Tank was a 28-year-old North Dakota husband and father of two when he disappeared after leaving a Moorhead, Minnesota, bar on December 2, 1971. More than five decades later, Tank has never been found, and his disappearance remains listed with the Fargo Police Department and national missing-person databases.

A Night Out in Moorhead Ends in a Disappearance

On the evening of December 2, 1971, Tank was dropped off at Ralph’s Corner Bar in Moorhead at approximately 10 p.m. Although he was not described as a regular customer, he occasionally visited the bar and reportedly socialized there with his brother-in-law. At some point that night, Tank left the establishment, apparently intending to return to his home in nearby Fargo, North Dakota.

The trip between the bar and his Fargo home was short by car, but Tank never arrived.

The weather added another troubling element. Temperatures were around 17 degrees Fahrenheit, with winds reaching approximately 20 mph. Investigators questioned taxi drivers in the days after Tank vanished, but none could identify him as a passenger that night.

Tank’s wife reported him missing on December 6, four days after he was last seen. The Fargo Police Department’s current long-term missing-person page lists his disappearance as December 2, 1971, and says he was last seen leaving Ralph’s Corner Bar in Moorhead.

Who Was Kenneth Edward Tank?

Tank had spent his life in North Dakota and attended school in Rugby. At the time of his disappearance, he was married and had two children. His wife told investigators that the marriage was not experiencing serious problems and described her husband as a shy person.

Tank stood approximately six feet tall and weighed between about 165 and 185 pounds. He had brown or dark brown hair and hazel-green eyes. Fargo Police says he was wearing a dark green or gray suit, white shirt, thin tie, brown shoes and a three-quarter-length brown car coat with a black fur piece when he disappeared.

His Work as an Insurance Adjuster Raised Questions

One of the most significant aspects to emerge publicly from the investigation concerns Tank’s former work as an insurance adjuster.

Tank had recently left that job. According to information contained in the police report obtained decades later by Forum News Service, his wife said he had difficulty with the responsibility of denying insurance claims. A family member, however, offered a more alarming account: Tank reportedly believed that he and his family could be in danger.

The family member told Forum News Service that threatening telephone calls had been received in the weeks before Tank disappeared and that the calls became serious enough that the family was considering moving out of state. According to that account, the threatening calls stopped after Tank vanished.

There were also rumors that Tank had angered people connected to a motorcycle gang after refusing an insurance claim. The published investigation cautions that authorities did not establish that theory as the cause of his disappearance. Police records did indicate, however, that Tank had experienced at least one threatening incident while working as an adjuster in which someone pulled a knife on him.

These details have fueled the possibility that Tank met with foul play, but no publicly identified suspect has been charged in connection with his disappearance.

Sightings, Human Remains and Dead Ends

Investigators received alleged sightings of Tank after his disappearance, including reports that he had been seen at different locations around the area. None of those reports ultimately established that Tank was alive after December 2, 1971.

Human remains discovered over the following decades also prompted comparisons.

A body discovered in a North Dakota hay field in 1977 was determined not to be Tank. Remains found in 1997 were likewise ruled out. An additional historical report discussed in the Websleuths case thread states that bones recovered near the Ayr exit along Interstate 94 were tested by the FBI and determined not to match Tank.

Despite decades of tips and possible leads, no confirmed remains belonging to Kenneth Tank have been recovered.

Declared Dead, But Still a Missing-Person Case

Tank was eventually declared legally deceased, although sources differ on the precise year associated with that legal action. Fargo Police’s current case page states that a judge declared him deceased in 1979, while The Charley Project reports a December 1977 legal declaration. The discrepancy is important when documenting the case and should not be silently resolved in favor of one secondary source.

Being declared legally dead did not solve the mystery of what happened to him.

Tank remains included in North Dakota’s missing-person database. NamUs lists him as MP23462, and the Doe Network identifies the case as 5725DMND. Historical case information also lists Fargo Police case number 13-8511.

Latest Publicly Available Case Information

The case remains active in publicly accessible missing-person resources. The North Dakota Missing Persons database currently lists Kenneth Edward Tank under the Fargo Police Department, and Fargo’s own long-term missing-person page continues to seek information from the public.

There have also been recent administrative updates to his missing-person records. The Charley Project reports that its Tank profile was updated on December 1, 2025, adding photographs, clothing information and updated disappearance details.

More recently, the Doe Network recorded a case-information update for Kenneth Edward Tank on May 13, 2026. Its update log does not publicly describe that entry as a new investigative breakthrough, identification, arrest or recovery; it specifically identifies it as a case-information update. Tank is not shown there as a closed case.

NamUs also continues to maintain MP23462 for Tank. Taken together, the currently available records show that his disappearance remains unresolved and that agencies and missing-person organizations continue maintaining and updating his case information.

What Happened to Kenneth Tank?

Several possibilities have surrounded the case for decades. Tank could have suffered an accident or exposure after leaving the bar on a dangerously cold night. Investigators also considered whether he intentionally disappeared, while information concerning threatening calls and incidents connected with his insurance work raised the possibility of foul play.

No publicly available evidence has conclusively established any of those explanations.

What is established is that Kenneth Tank left Ralph’s Corner Bar on December 2, 1971, never made it home, and has never been conclusively seen again. His remains have not been identified, and the disappearance remains an open mystery more than half a century later.

Anyone with information concerning Kenneth Edward Tank’s disappearance is encouraged to contact the Fargo Police Department.