O.J. Simpson SECRET Witness Claims Prosecutors Blocked Her From Testifying

Look out, O.J. Simpson! Secret witness Jill Shively claims to have seen the former athlete fleeing the murder scene where his ex-wife, Nicole Brown Simpson, and friend Ronald Goldman were killed — but prosecutors never called her to testify!

One scene in the first episode of the new FX television mini-series American Crime Story: The People V. O.J. Simpson centers on Shively telling prosecutor Marcia Clark what she saw that fateful night on June 12, 1994.

Shockingly, Shively believes that her testimony could have even proven Simpson's whereabouts at the time of the murder!

"I was two or three blocks from where Nicole lived when this white Bronco with no headlights flew through a red light and nearly hit my car," she told RadarOnline.com. "The road was really well lit and I saw the driver clearly. It was O.J.!"

"I recognized him because I had just seen him in the movie Naked Gun 33 1⁄3, and he had glared at me," Shively continued.

As RadarOnline.com previously reported, Simpson's wife Nicole and friend Ron were murdered between 10:15 p.m. and 10:45 p.m. — just minutes before Shively claims to have seen the shamed football legend just blocks away from the crime scene.

Terrified, Shively says she quickly jotted down Simpson's license plate number as "3ZWZ788" — just one letter off from his "3CWZ788" plate number.

However, prosecutors ignored Shively's testimony after she opted to give a TV interview soon after the tragic murders.

"I heard later that O.J. even admitted I'd seen him," Shively told RadarOnline.com, adding, "He said, 'I should have hit the b***h!'"