Story here. The woman reported the alleged assault three months after the encounter and during that span continued contact with him via text messages and phone calls. I'm going to keep a close eye on this story. Excerpt:

'NEW YORK -- The son of New York City Police Commissioner Raymond Kelly is under investigation after a woman accused him of rape, sources tell NBC New York.
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Details of her complaint are unknown at this time, but Greg Kelly has not been arrested or charged with any crime.
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Kelly's attorney, Andrew Lankler, said that his client was aware of the investigation and strongly denied any wrongdoing.

"Mr. Kelly is aware that the New York County District Attorney's office is conducting an investigation. Mr. Kelly strenuously denies any wrongdoing of any kind, and is cooperating fully with the district attorney's investigation," Lankler said in a statement. "We know the district attorney's investigation will prove Mr. Kelly's innocence."
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The New York Times, quoting an anonymous law enforcement official, said the woman is in her late 20s or early 30s. She walked into the 13th Precinct with her sister after 8 p.m. on Tuesday and made her complaint, according to the Times.

The woman told police she met Kelly on the street, and the two had drinks together on Oct. 8, the paper reported. They then moved on to her office at a Lower Manhattan law firm. According to the Times, the woman told the cops that the rape occurred at the office. The two continued to keep in touch by phone and text message after the encounter.'