Updated at 11:25 a.m. ET
NEW YORK - The Manhattan district attorney's office will agree to the release of Dominique Strauss-Kahn without bail at a hearing Friday after it uncovered serious questions about the credibility of a hotel housekeeper who accused the former International Monetary Fund leader of sexual assault, a person familiar with the investigation has told The Associated Press.
The AP learned about the agreement shortly before the 62-year-old Strauss-Kahn arrived for the hearing amid a throng of reporters, cameras and onlookers. He is accused of crimes including attempted rape and denies the allegations.
The person who spoke to the AP was not authorized to talk publicly and did so on condition of anonymity. The judge would have to sign off on the terms of any release before Strauss-Kahn is freed.
Investigators have come to believe that the woman lied about some of her activities in the hours around the alleged attack and about her own background, a law enforcement official told the AP on Thursday. The official is familiar with the case but spoke on condition of anonymity to discuss matters not yet made public in court.
The new developments could represent a stunning reversal of fortune for the man whose financial and political career all but disintegrated when he was arrested just six weeks ago, reports CBS News correspondent Elaine Quijano.
Sources close to the defense tell CBS News they do not expect the charges against Strauss-Kahn to be dropped Friday as it is just a bail hearing.
Prosecutors think the housekeeper lied about details on her application for asylum in the U.S., including saying she had been raped in her native Guinea, the official told the AP.
"She actually recounted the entire story to prosecutors and later said it was false," the official said.
Prosecutors haven't necessarily reached a new conclusion about the allegations against Strauss-Kahn and have not decided whether to downgrade the charges, the official said. Investigators had earlier said they found traces of Strauss-Kahn's semen on the maid's uniform, indicating an encounter, and they haven't backed away from that.
But the serious reduction in bail from a $6 million in cash bail and bond under house arrest in a pricey TriBeCa loft, to nothing signals the case is not as strong as initially thought.
Strauss-Kahn arrived at the courthouse Friday morning from a Lexus SUV and strode confidently up the granite steps with his wife, French journalist Anne Sinclair, at his side. He wore a dark gray suit, and she a white jacket.
Strauss-Kahn lawyer William W. Taylor would say only that the hearing was to review the bail plan. The Manhattan district attorney's office declined to comment.
A third person who spoke on condition of anonymity told the AP that prosecutors have raised issues about the accuser's credibility in the case against Strauss-Kahn, but also would not elaborate.
The New York Police Department, which investigated the case, declined to comment. The woman's lawyer did not immediately return a telephone call Thursday seeking comment.
The maid told police that Strauss-Kahn chased her down a hallway in his $3,000-a-night suite in New York's Sofitel hotel, tried to pull down her pantyhose and forced her to perform oral sex before she broke free.
If the case collapses, it could once again shake up the race for the French presidency. Strauss-Kahn, a prominent Socialist, had been seen as a leading potential challenger to conservative President Nicolas Sarkozy in next year's elections until the New York hotel allegations embarrassed Strauss-Kahn's party and led to his resignation from the IMF.
"Those who know Dominique Strauss-Kahn will not be surprised by this evolution of events," one of his French lawyers, Leon Lef Forster, told the AP in Paris. "What he was accused of has no relation to his personality. It was something that was not credible."
New doubts about Strauss-Kahn's accuser would also revive speculation of a conspiracy against Strauss-Kahn aimed at torpedoing his presidential chances. Within days of his arrest, a poll suggested that a majority of French think Strauss-Kahn who long had a reputation as a womanizer and was nicknamed "the great seducer" was the victim of a plot.
Socialist Party chief Martine Aubry announced her own presidential bid this week, after having long been expected to throw her weight behind a Strauss-Kahn candidacy. French politician Michele Sabban said Friday that the Socialists should suspend the presidential primary calendar because of the new developments.
The New York Times first reported on its website Thursday that investigators uncovered major inconsistences in the woman's account of her background, citing two law enforcement officials. The Times also reported that senior prosecutors and Strauss-Kahn's lawyers are discussing whether to dismiss the felony charges, including attempted rape.