PORTLAND, Ore. -- Police provided Kaine Horman with probable cause to believe that his wife Terri Moulton-Horman was involved in 7-year-old Kyron's disappearance and a murder-for-hire attempt against him, a restraining order showed.

A Multnomah County judge made the key document public Thursday.

I believe Respondent (Terri) is involved in the disappearance of my son Kyron who has been missing since June 4, 2010, Kaine stated in the filing. I also recently learned that Respondent (Terri) attempted to hire someone to murder me. The police have provided me with probable cause to believe the above two statementsto betrue, Horman wrote.

Read: Restraining Order (PDF)

Seven-year-old son Kyron has been missing for more than four weeks and was last seen the morning of June 4 atSkyline Elementary. His step-mother TerriMoulton-Horman was the last person he was with.

In an addendum to the order - Kaine asked the judge to force Terri to move out of the home they formerly shared anda hearing was scheduled for July 22, according to the court. The addendum stated that Kaine believed the home was the best place for his children to return to. MORE:Read the addendum

Parents hold emotional press conference

Thursday evening, Kyron's parents Desiree and Kaine directly answered media questions on TV for the first time, in a press conference that was often emotional.

She's still not cooperating. I'm unfortunately kind of at that point ... I don't have words ... Kyron is still out there and he needs to be home, Kyron's mother Desiree Young said in reference to Terri. She added the situation was extremely frustrating. She's not taking an active role in finding Kyron, telling the truth.

I've known her a long time. I know she's lying.

It was a point in time decision (to file the order) and it was based on a lot of information that was provided so it was not a sudden decision that was made, Kaine said in a news conference Thursday. He added that he was not concerned about the murder-for-hire plot and that it would be addressed once Kyron was found.

In a section of the restraining order related to restricting firearms, Kaine Horman underlined text that read: I am concerned about his/her getting firearms and added a hand-written note: Respondent (Terri) attempted to hire someone to murder me.

The restraining order also prohibited Terri from goingto Kaine's workplace, a gym in Beaverton, and Skyline Elementary School.

Murder-for-hire plot revealed

On Sunday, a reliable source informed KGW that Kaine Horman sought the restraining order and filed for divorce after being told by investigators that his wife, Terri Horman had plotted to hire a landscaper to kill him. The restraining order filing indicates that the murder-for-hire plot happened in late 2009.More: Murder for hire plot

The orderissued in late June against Terri Horman on behalf of her husband Kaine Horman had been sealed by a judge after prosecutors indicated that the release of the document could jeopardize the ongoing investigation at the time.

Kaine Horman was told by investigators that his wife Terri had offered a landscaper a lot of money to kill him, according to more than one source.

On June 26th, the landscaper, who has been cooperating with authorities and was wearing a wire, met with Terri and an undercover officer. Police were prepared to arrest her if she implicated herself but Terri cut the conversation short, the source told KGW.

Later that day, Kaine was told by investigators that she had plotted against him. He was also told if she did it once, there's a chance she did it other times and we're investigating that possibility, according to a source close to the investigation.

That night Kaine took their 19-month-old daughter and moved out.

According to sources, Terri Horman had talked to the landscaper about being in a bad marriage and had claimed that Kaine had hurt her emotionally.

The Oregonian first reported the murder-for-hire plot Sunday morning. KGW independently confirmed the report through a reliable source.

The landscaper - whom Terri had hired to do work last November without Kaine's knowledge - came forward to investigators as they reached out to everyone that they could find who had had contact with the family. While he said he had no intention of carrying out the plot, he did believe that he would be getting something from Terri.

She led him on, sources said.

Police records showed that Terri made two calls to 911 on the night of June 26. The first time, at 5:17PM, was recorded as being related to threats and the second time, at 11:39PM, which was recorded as a custody issue and was made after it was clear to her that Kaine and their daughter were not returning.

Kaine files for divorce, restraining order

Two days later, Kaine filed for divorce and obtained a restraining order prohibiting Terri from having any contact with him or their daughter.

Terri, meanwhile, has hired well-known defense attorney Stephen Houze, whom she contacted on the recommendation of friends and family who had researched the issue.

This all comes as the investigation seems to have increasingly focused on Terri even though, officially, law enforcement has declined to label her a suspect or even a person of interest.

COMPLETE COVERAGE: Search for Kyron Horman

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