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Co-owner of West Fargo's TNT's Diner died by suicide

Tim and Tammy Hagensen of TNT's Diner in West Fargo display the Fargo Jet Center t-shirt signed by Tom Hanks and his family after their early morning breakfast visit. David Samson / The Forum

WEST FARGO—The 53-year-old co-owner of TNT's Diner here who was found dead after he went missing two months ago died by suicide, an autopsy showed.

Tim Hagensen died of asphyxiation apparently caused by carbon monoxide, according to a report from the Forensic and Autopsy Service at the University of North Dakota released Friday, June 10, by the Cass County Coroner's Office.

Hagensen was reported missing by his family about 10 p.m. April 13. After hundreds of friends and family searched for the diner owner, his body was found the afternoon of April 14 inside his truck near 38th Street in rural West Fargo. His death didn't appear to involve foul play, deputies said at the time.

His wife and TNT's co-owner, Tammy Hagensen, closed the restaurant April 22, saying it would be difficult to keep working there because it reminded her of her husband so much.

Dean and Della Johnson, former owners of the long-closed Treetop Restaurant and Lounge in Moorhead, are buying the restaurant and plan to open it under a new name later this month.

Johnson said he's doing away with the name as a gesture of respect for the former owners.

"Keeping the name means it would always be out there for her to see," he said.

Warning signs of suicide:

The more of these signs a person shows, the greater the risk. Warning signs are associated with suicide but may not be what causes a suicide:

• Talking about wanting to die.

• Looking for a way to kill oneself.

• Talking about feeling hopeless or having no purpose.

• Talking about feeling trapped or in unbearable pain.

• Talking about being a burden to others.

• Increasing the use of alcohol or drugs.

• Acting anxious, agitated or reckless.

• Sleeping too much or too little.

• Withdrawing or feeling isolated.

• Showing rage or talking about seeking revenge.

• Displaying extreme mood swings.

What to do if someone you know shows warning signs of suicide:

• Do not leave the person alone.

• Remove any firearms, alcohol, drugs or sharp objects that could be used in a suicide attempt.

• Call the National Suicide Prevention Lifeline at

• (800) 273-TALK (8255) or FirstLink at 211.

• Take the person to an emergency room, seek help from a medical or mental health professional or call 911.