PORTLAND -- Multnomah County Sheriff Dan Staton said Friday that the Kyron Horman investigation was in no way stalled, and that 20 detectives from his office and other agencies including the FBI were on the case 24/7.

Investigators were operating under the premise that Kyron is still alive, he said.

There have been 2,877 valid leads and about 60 percent of them have been covered. Each lead takes detectives in a new direction, making it difficult to pursue the remaining leads faster, he said.

Everyone is a person of interest, Staton said in response to questions about any specific individuals.

Staton added that there were no serial patterns that indicated a threat to the community.

Staton called the investigation unique, in the fact that it involved interviews from so many children, parents and school staff.

Source: Terri Horman lied to investigators

A reliable source told KGW TV in Portland Thursday that missing seven-year-old Kyron Horman's step-mother has lied to investigators and was uncooperative. This came on the same day that the boy's family pleaded with her to cooperate with investigators.

Staton said Friday that he could not comment on the report Terri Horman lied to investigators and said to his knowledge, she had been cooperative.

Kyron's biological parents Desiree Young and Kaine Horman made a brief statement Thursday.

We implore Terri Horman to fully cooperate with the investigators, to bring Kyron home, Desiree Young said as she spoke before a room full of reporters Thursday, withKyron's father and stepfather standing behind her in support.

Terri Moulton-Horman has told police since Kyron vanished on June 4 that she left him at school that morning and never saw him again.

Kyron is still alive, Desiree said. We would like all of you everyone - to continue to get his face out there, to continue to look for him in your day-to-day activities. We pray each day for Kyron, she said.

Kyron's father, Kaine Horman and his step-father, Tony Young, did not speak to reporters. After Desiree made the brief statement, she got up and the three embraced.

Several hours after the meeting with reporters, Desiree sent an e-mail to KGW with written responses to questions posed to them about the investigation and Kyron. The Q&A said that while the family cannot comment further on Terri, they wanted to tell people more about Kyron. It went on to describe personal details about the little boy including a V-shaped birthmark that appears on his forehead when he is upset.

Later that same day, a reliable source told KGW Terri was not cooperating with authorities and had refused to answer questions. The source also told KGW that cell phone records showed Terri was not where had she said she was on the day Kyron disappeared.

Neither Terri nor her attorney responded to questions Thursday.

Terri Horman hires well-known defense attorney

Meantime, Terri hired attorney Stephen Houze, a well-known Oregon lawyer often referred to as the top criminal defense attorney in the state. Houze, has also taken on many other high-profile cases including former Trail Blazer Damon Stoudamire and Dr. Jayant Patel, dubbed Dr. Death by Australian media.

Police have not named Terri as a suspect in the case but they did print her photo on fliers distributed during the investigation and put her through at least two lie-detector tests so far.

KGW also learned that a threat-related 9-1-1 call was made from Terri and Kaine's home Saturday night, two days before Kaine filed for divorce and obtained a restraining order against his wife.

Kaine moved out of the family home on Saturday with 19-month-old Kiara, his daughter with Terri.

The restraining order was sealed by Multnomah County Circuit Judge Keith Meisenheimer, who handles family law. However, the abuse prevent petition showed that Terri was not granted any time with their daughter and restricted from accessing firearms. The no firearms clause was routine in such cases, a court clerk said.

On Monday, Kaine filed divorce papers and a restraining order in Multnomah County Circuit Court. The divorce papers listed irreconcilable differences and a breakdown of marriage as the reason he left her.

Early Monday, Terri denied to KGW that Kaine had moved out of the home they shared in Northwest Portland. She also said she knew nothing of a statement getting released by Kaine, along with his ex-wife Desiree Young and her husband, Tony Young.

The statement, released late Monday, read in part: Any actions taken by the investigation, or by us, are based on the best interests of Kyron and Kiara and comply with the law. Beyond this, we have no comment on the matter. It was signed by Kyron's father, step-father and mother, but not Terri, Kyron's step-mother.

The statement also said that the trio was in support of the investigation. So far, the investigation included several searches of the Horman home, at least two polygraph tests for Terri and many hours of police questioning, among other things.

Step-mom a focus of investigation

In addition to this update in the case, Kyron's photo was on the cover of 'People' for the second week in a row and the story that went with it focused on the attention that has been placed on Terri.

Terri's father, Larry Moulton, 72, told 'People' matter-of-factly that the finger points at step-mom, she's trying to be cooperative.

He, too said she has had two polygraphs, that police have taken her truck twice and questioned her several times, for up to six hours. He also described his daughter as really good with kids and pointed to a Halloween outing to pumpkin patches with the family in costume.

Since Kyron vanished three weeks ago, police singled her out in a questionnaire sent to parents and staff of Skyline school. A lifelong friend described Terri's unhappiness with the second polygraph test.

Police scoured scores of questionnaires turned in by parents of Skyline Elementary School children, staff members and even delivery drivers for new clues last week as they tried to untangle the mystery of Kyron's disappearance.

The questionnairescontained several questions that were intended to help trigger people's memories about the day that the seven-year-old disappeared.

Among the questions were: Did your child see Kyron's step-mom, Terri on 6/4/10, at or near the school? and Did your child see a white Ford F250 pickup truck on 6/4/10 at or near the school? Terri Horman, Kyron's step-mother, was driving the white truck on the day he disappeared. The questionnaire also showed photos of Terri and the truck.

Capt. Jason Gates said during a press conference that the photos and questions were an effort to jog people's memory in the case, since Terri was the last person who spent time with Kyron.

Gates added that the family was in full support of the decision to circulate the new questionnaire Friday. He read a family statement that said, Any parent would understand the grief that this causes our family... please know that we fully support the release of this flier and we want Kyron home and we hope that this will do that.

Anyone who has seen Kyron Horman or knows of his whereabouts is asked to call police at (503) 261-2847.

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