FARGO — Steven Helm says he feared for the worst when he learned his one-time girlfriend and employee Brenda Kartes vanished without a trace from a drug-treatment facility in July 2018.

In a Tuesday, Sept. 3, interview with WDAY News' Matt Henson, he said his fears were confirmed. The Fargo Police Department announced on Aug. 29 that skeletal remains found days before near the Red River in south Fargo belonged to 32-year-old Kartes.

"(It was) terrifying. Words can't express what the last week has been like," he said.

Police have not ruled Kartes' death a homicide but have called it suspicious.

Helm, who had been dating Kartes for about a year, says he joined the community in searching for her. He told WDAY News that he had been trying to end his relationship around the time she disappeared, and for that reason, investigators have met with him multiple times.

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But he said he sometimes feels that police are pointing the finger at him.

"Despite the help I have been giving them, I've been looked at . . . like I know more than what I have mentioned," explained Helm, who said he voluntarily took a lie-detector test from investigators. "I don't know if there is a pass or not. I don't know what a pass would be. They said they would go over the polygraph with me but they never did."

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In the interview, Helm, who owns the adult entertainment and exotic dancer business Sinful Desires, maintained he had nothing to do with Brenda Kartes' disappearance.

"Did you do anything to Brenda?" Henson asked Helm.

"No, I loved her," he replied.

While Helm said he is being cautious about divulging information provided to him by police about the investigation, he told WDAY News that Kartes' death could possibly be tied to his adult entertainment business where she had worked as a dancer.

"There are a few people that have been a concern to me," he said.

Helm said police have not contacted him since Kartes' body was found, but he has reached out to them to offer possible leads.

When asked by Henson if something "sinister," happened to Kartes, he said he wasn't sure.

Fargo police said last week they have identified people of interest in the case but have not disclosed any names.

Police ask anyone with information about Brenda Kartes' disappearance or death to contact them at 701-241-5777, or text-a-tip to 701-730-8888.