[UPDATES BELOW] A yellow cab jumped the curb on Sixth Avenue in Midtown this morning, seriously injuring a pedestrian.

An FDNY spokeswoman said that EMS responded to a call at around 11:22 a.m. and transported one victim to Bellevue hospital. NBC is reporting that the victim is a woman, while other unconfirmed scanner reports claim that the victim suffered a severed limb. The FDNY spokeswoman declined to provide the victim's gender or condition.

We'll update when we receive more information. In the meantime, it appears Dr. Oz has been at the scene with a film crew, tending to the wounded.

[UPDATE // 12:31] An NYPD spokeswoman said the victim, a 23-year-old woman, had her right leg amputated at the knee. A cyclist was also injured by the cab, but was treated at the scene for minor injuries. The spokeswoman said no arrests have been made, and the investigation is ongoing.

The Post is identifying the victim as a "tourist," and describing her injuries as extremely serious:

It appeared she lost both legs below her knees, witnesses told The Post. A male bicyclist was also struck in the wild crash but didn’t suffer any severe injuries.

The tabloid notes that "three good samaritans" used belts and a dog leash as a tourniquets to help the woman, and shows a photo of the cab driver being detained by police.

Meanwhile the Wall Street Journal confirms that Dr. Oz was on the scene.

[UPDATE // 2:20 PM]FOX's sources are indicating that the "cabbie had gotten into a road rage argument with a livery cab driver and the cars were trying to out run each other." An NYPD spokesman said no charges have been filed and the incident is still under investigation.

DNAinfo has a good account of what happened, noting that a hot dog vendor who had just served the women helped first responders pack the woman's severed leg into ice.

They also spoke to the cyclist:

The cyclist was riding up Sixth Avenue alongside the cab when the motorist tried to make a left onto 49th Street about 11 a.m., the cyclist said.

"I told him, 'Stop,'" said the cyclist, who banged on the hood. "He gets angry. He honked his horn and accelerates."

The cyclist said he was then knocked onto the hood of the cab, and was carried along as the cab swerved up onto the sidewalk.