The New York Post reports:

Police Commissioner Ray Kelly’s newsman son, Greg, is being investigated for allegedly raping a woman, law-enforcement sources told The Post early today.

The woman filed an official complaint Tuesday against the younger Kelly, claiming the co-host of Fox 5’s “Good Day New York” attacked her last October, the sources said.

The allegation is being investigated by the Manhattan District Attorney’s Office because of the inherent conflict of interest in an NYPD probe, according to the sources.

Greg Kelly’s lawyer, Andrew Lankler, said his client “strenuously denied” the allegation.

“Mr. Kelly is aware that the New York County District Attorney’s Office is conducting an investigation,” Lankler told The Post.

“Mr. Kelly strenuously denies any wrongdoing of any kind, and is cooperating fully with the district attorney’s investigation. We know the district attorney’s investigation will prove Mr. Kelly’s innocence.”

A police spokesman referred all questions to the Manhattan DA. A spokeswoman for DA Cyrus Vance Jr. declined comment.

Rosanna Scotto, Kelly’s “Good Day New York” co-host, said today “I love Greg. That’s all I can say.”

Kelly was absent from this morning’s program.

The woman, in her late 20s or early 30s, went to the 13th Precinct station house with her sister sometime after 8 p.m. Tuesday to file the complaint, sources said.

She told police she met Greg Kelly, 43, on a street Oct. 8 and they went for drinks at the South Street Seaport, the sources said.

Then, she claimed, they went to the lower Manhattan law firm where she works — it was not clear if she’s a lawyer— and the alleged assault took place there.

Greg Kelly and the woman continued to communicate after the alleged incident, according to the sources.

She told police her boyfriend got furious when she related her story to him, and he approached the police commissioner at a public event.

It wasn’t immediately clear when that was.

The boyfriend told Ray Kelly that Greg had “ruined my girlfriend’s life,” according to The Post’s sources.

The commissioner asked him to explain and the man said he didn’t want to discuss it in a public setting.

Kelly then told him to put it in writing and send it to him, the sources said.

It wasn’t immediately clear if that letter was ever written.

It’s also not clear why the accuser waited three months to make an official report.