Karl Engemann told the dispatcher that he thought she may have taken too much medication for anxiety or depression.
Officers who responded to the call found several prescription bottles, including Ambien and anti-anxiety medication, that had been filled within 10 days but were empty, according to a police report. It also said there was a handwritten note that indicated she had taken the pills intentionally.
Another note expressed Shawn King's desire to be buried in Utah, police said.
The report did not include any mention of why Shawn King may have wanted to harm herself. Engemann had told the dispatcher that he did not suspect it was a suicide attempt.
The Kings filed for divorce in April, but Larry King released a statement through his spokesman, Howard Rubenstein, saying "reports that we have fought are absolutely false."
Shawn King is Larry King's seventh wife. The couple has been married since 1997 and has two sons.
"Our marriage is still together, and I am staying very close to our children, who we love immensely," Larry King said. "We shall go through this difficult time intact as a family."