SALT LAKE CITY -- Police in Salt Lake City are not ruling out an abduction by a stranger, but said they are focusing their attention on those who knew Elizabeth Smart, as they look into the kidnapping of the 14-year-old girl.

Salt Lake City Police Chief Rick Dinse said they believe police have already talked to or will soon talk to the person responsible for Elizabeth's disappearance.

ELIZABETH SMART Slideshow: More Images Of Elizabeth

"I don't have anyone that I can point to, but with everything we know ... there exists the possibility that the suspect may have been talked to or is about to be talked to."

He issued a stark warning to the captor and said he believes the kidnapper is still in the area.

"My caution to this suspect if he is listening is: We are going to get you. And if you've got Elizabeth, you'd better release her now," Dinse (pictured, below) said. "I believe we will solve this case."

"We are looking at everyone (as a potential suspect). We have not excluded anyone at this time," Dinse said. "We are not eliminating anyone at this point until we identify the suspect."

"We believe it is somebody who stalked this area one way or another. And I think anybody who does that has the ability to do it again."

Forensic investigators in Utah are hoping a search of the Smart's home might yield clues to her disappearance.

They spent several hours in the Smart family's sprawling $1 million Salt Lake City home early Tuesday morning. They wanted to be there in the early morning hours -- because that's when Elizabeth disappeared a week ago.

The 14-year-old girl was apparently abducted at gunpoint from her bedroom nearly a week ago.

Police said they've ruled out the possibility that Elizabeth staged her own abduction -- or that she's a runaway.

Authorities, meanwhile, also are evaluating a polygraph test given to the teenager's father this past weekend. Ed Smart said he has nothing to hide, so he took the test.

Police said it's not unusual to give polygraph tests to the parents in such cases. They won't say why they asked Smart to take the test, saying only that other relatives may be asked to do it, too.

Police said 40 FBI agents and 60 police investigators continue to sort through thousands of tips.

Police also reinterviewed 9-year-old Mary Katherine Smart, Elizabeth's sister. She told investigators that a gunman came the bedroom she shared with Elizabeth and forced her to go with him.

Dinse said the sister's story was consistent when she was reinterviewed and they learned more about the suspect than they'd previously known. She's been formally interviewed three times, he said, but wouldn't comment on whether she recognized the suspect.

Mormon Communities Aid In Search

Mormon communities in the West have mobilized in the effort to help find Elizabeth.

A Mormon church leader in Las Vegas said a church leader e-mailed all church leaders in the Southwest last Wednesday, the day Elizabeth was kidnapped from her Salt Lake City home.

Within a short period of time, fliers were up on Mormon church bulletin boards in Nevada, Arizona, New Mexico, Texas, Oklahoma and California.

The Smart family are members of The Church of Jesus Christ of Latter-day Saints.

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