Police Interview Residents of Levy's Apartment Building

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Washington, D.C., police have told Fox News that detectives late Thursday were talking again with residents of missing federal intern Chandra Levy's apartment building.

Police sources told Fox News that investigators are trying to speak with some of the people they were not able to talk to previously to learn if they saw or heard anything suspicious and to get backgrounds on all of the residents.

Police continued to comb through wooded areas of the city Thursday, searching for clues to what happened to Levy.

Investigators covered ground at Fort Davis and Fort Stanton parks in southeast Washington and in Rock Creek Park in northwest D.C.

Also of note on Thursday was a report from one of the last people to see Chandra before she disappeared.

An employee of the health club where Levy regularly worked out said the 24-year-old was upbeat April 30, the night she came into the gym to cancel her membership.

"She was not disoriented. She was very much the same person I knew,'' the man told ABC's Good Morning America.

The man, who was not identified by name, also said Levy gave him every indication she was returning to her family in California.

He said Levy came to see him and said, "I'm not going to use my membership. I'm going home."

He said he told Levy she could transfer her membership to a club in her hometown of Modesto, Calif. Asked if he had any doubt she was going home, the man said, "Absolutely not. She was very clear why she was leaving."

Levy was reportedly making preparations to attend her graduation ceremony at the University of Southern California.

The gym staffer said he and Levy talked often. "I saw her almost every day," he said. "She worked out every evening. She was very friendly. ... We talked casually. ... She was very upbeat, very private."

Levy's disappearance is still considered a missing person case, but her congressman, Gary Condit, has fallen under increased scrutiny since he admitted to an affair with Levy on his third interview with police. The 53-year-old Democrat, who is married, represents Levy's Modesto hometown.

Late Thursday, the House Ethics Committee deferred Rep. Bob Barr's request to investigate the Condit matter.

In a letter to the committee, Barr, R-Ga., said that there was "evidence" that Condit "has obstructed a law enforcement investigation."

In a letter of response, Chairman Joel Hefley and Ranking Minority Member Howard Berman said that, pursuant to committee rules and to longstanding committee policy, the determination had been made that it was appropriate to defer action on the allegations contained in Barr's letter because, based on public accounts, it appears that relevant law enforcement entities are reviewing those allegations. The letter of response noted that the determination to defer should not be taken as any indication of the committee's position on the merit, or lack thereof, of the allegations contained in Barr's letter.

Investigators have discovered that Levy viewed Condit's House committee Web sites on her laptop computer on May 1, Fox News has learned.

According to a partial list released by D.C. police Wednesday evening, Levy also visited the Web sites of several newspapers, including The Washington Post, The Washington Times, The Modesto Bee and the Los Angeles Times. The list also included restaurant sites, travel sites and the House Agriculture Committee site.

Computer records also indicate that Levy looked up a map of Klingle Mansion in Rock Creek Park, about two miles from her apartment building, on the day after she was last seen.

Levy was online from about 9:30 a.m. to about 1 p.m., and also looked up travel Web sites and sent e-mails to friends and her parents.

Washington Police Chief Charles Ramsey told Fox News that by releasing the site names, investigators hope someone will come forward with valuable information.

Levy's wallet, credit cards and identification were left behind in her apartment, leading her family to believe she left on May 1 with someone she knew.

Ramsey said investigators have not ruled out the possibility that Levy may have left her ID behind for other reasons — for example, to make a quick trip to a nearby store with only the money in her pocket.

Police have four theories: she left of her own accord, committed suicide, has amnesia or is the victim of foul play. There were no signs of foul play in Levy's apartment after she vanished.

Police say the suicide theory becomes more unlikely with each passing day because a body has not been found. Last week, police released computer-generated pictures of Levy showing how she might look if she changed her hairstyle.

Police estimate the search of area parks will continue for the next two weeks. Because of the high costs involved, however, there will be no more excavation of landfills for clues in the Levy case.

Fox News' Rita Cosby and The Associated Press contributed to this report.