Condit will help FBI build Levy profile

The video released by Levy's family shows her discussing college classwork and experiences.

WASHINGTON (CNN) -- Rep. Gary Condit has agreed to sit down with an FBI profiler to help create a psychological portrait of missing intern Chandra Levy, sources told CNN on Tuesday.

The interview is expected to be conducted sometime this week, without participation by the Washington Metropolitan Police. The profile would be used by investigators trying to determine whether Levy's state of mind led to her disappearance.

D.C. police also have expressed interest in interviewing Condit again, which would be his fourth interview. Sources told CNN it is unclear whether the session with the FBI would be conducted in lieu of a fourth interview.

It was in his third interview with police that Condit, 53 and married, admitted he had a sexual relationship with Levy, 24, according to police sources. In the wake of that revelation, FBI investigators believe he can aid them in trying to see into her thinking at the time she disappeared.

VIDEO Chandra Levy discusses college life in this home video released by her family Play video (QuickTime, Real or Windows Media) CNN's Rusty Dornin reports on the Levy family's strategy to keep Chandra in the headlines (July 24) Play video (QuickTime, Real or Windows Media)   MORE STORIES Fellow Blue Dog Dem scolds Condit     EXTRA INFORMATION Key players   Interactive timeline   Map of search area     RESOURCES On the Scene: Frank Newport: Public interest in the Levy case   Message board: The case of the missing intern

Levy's aunt has also described an affair between her niece and Condit. Condit has publicly acknowledged only a friendship.

Levy was last reported seen April 30. Police believe she used her computer in her apartment on the morning of May 1, but there has been no trace of her since. She had recently ended an internship with the U.S. Bureau of Prisons.

Political pressure mounting

Meanwhile, as police spent another fruitless day Tuesday combing wooded areas for clues to Levy's disappearance, political pressure built on Condit.

Police searched three areas: Rock Creek Park, the city's largest park and an area in which Levy had expressed interest, according to records from her computer; a wooded area in northeast Washington; and another wooded area near the Anacostia River. Police were looking for signs of a struggle or disturbed earth.

Police spokesman Joe Gentile said law enforcement officials were holding discussions with Condit's legal team about the ground rules of a possible fourth interview. Gentile said authorities were also "discussing" the possibility of a polygraph test for Condit. He would not elaborate.

Condit's attorney has said the lawmaker took a privately administered test that showed he knew nothing about Levy's whereabouts. Police have questioned the value of that test, saying they had no involvement in the questions posed.

Elsewhere, a Condit ally, Rep. Charles Stenholm, D-Texas, issued a written statement rebuking Condit, saying he has brought "discredit" to Congress.

And a longtime friend of the Levy family said critics back home in Condit's congressional district would push ahead with a petition campaign demanding his resignation.

"We'll be getting petitions out," said Donald Vance, a family friend and lawyer, on CNN's "Wolf Blitzer Reports." "We're getting support. There are various functions that we're going to."

"We want him to resign. We want to keep the pressure on him, however, more importantly, to fully cooperate with the authorities in telling everything that he knows. That's the most important thing."

Levy family releases videotape

In Levy's hometown of Modesto, California, her family released four new photographs of her Monday evening, part of an apparent bid to keep public attention on the case.

They included a photo of Levy in cap and gown graduating from San Francisco State in 1998 and photographs of her with parents and brother Adam. There was also a shot of her sitting in a chair in the U.S. Capitol in 2000.

The family also released a videotape showing Levy discussing her college classwork and experiences with her parents.

The videotape marks the first time Levy's voice has been broadcast. In the tape, she sounds upbeat and positive, talking about her social life and her education.

Police are treating Levy's disappearance as a missing person case and have interviewed more than 100 people. They have named no suspects, saying there is no evidence of a crime.

Dr. Robert Levy, Chandra's father, repeated his plea Tuesday for any information from the public that might help find his daughter.

"We just need one piece of information that really shows us," he told reporters outside his home. "So far, we haven't had it. We hope."