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Dominique Strauss-Kahn walks in police custody as police investigate assault allegations.
The Manhattan hotel maid at the center of sexual assault allegations against the head of the International Monetary Fund is expected to testify before a grand jury as early as today, sources familiar with the case tell NBC New York.
An indictment against Dominique Strauss-Kahn, who remains on suicide watch at Rikers Island, may be handed down soon, perhaps by the end of the week, sources said.
Strauss-Kahn's "suicide watch" designation means he is checked every 15 to 30 minutes and has been given a special prison jumpsuit and shoes that have no laces, a source tells NBC New York.
The source says a Rikers medical official ordered the suicide watch as a precaution because of his mood and the delicate nature of the case; Strauss-Kahn has not made statements about hurting himself, the source said.
"While inmate health records are confidential under the law... the Department of Correction follows the same protocol for safety and security of all inmates and that protocol dictates that every inmate is assessed for risk of harm to himself and risk of harm to others," a correction department spokesman said.
Strauss-Kahn was arraigned Monday on charges including attempted rape, sex abuse, a criminal sex act, unlawful imprisonment and forcible touching.
His lawyer denies the charges and says there is no evidence of a forced encounter.
Strauss-Kahn is being held without bail before his next court appearance, scheduled for Friday.
The maid's lawyer told NBC New York on Tuesday that her life has been turned "upside down" from the ordeal and says she is in hiding.
Strauss-Kahn is a member of France's Socialist party and was widely considered the strongest potential challenger to President Nicolas Sarkozy next year.