By Syma Chowdhry

PHILADELPHIA (CBS) — “You’re going to pepper spray me? Holy (expletive.)” Cop: “Ya, holy (expletive.)”

Sarah Rodriguez asked a University of Pennsylvania police officer that after he stopped her for running a red light.

She was riding her bike Wednesday morning around 10 a.m. on 38th street near Woodland Walk.

She said she noticed a police officer waving, but didn’t realize he was asking her to stop.

“I see a cop wave and I pulled my headphone out, look at him and was like ‘eh whatever.’ And I keep going.”

But the officer, who is also on bike, followed her.

“He comes by me, he was chasing me the whole way hit me with the back of his bike and I fell sideways and took my headphones off.”

That’s where the video picks it up.

A witness named Larry started recording the incident on his cell phone.

Eyewitness News showed Rodriguez the video for the first time.

“I called 911 at this point.”

And that’s when things escalated, as the officer called for back-up.

Rodriguez says another officer arrived, using gay slurs as he demanded Larry to stop recording.

“They called him a (expletive) and a (expletive.)”

The incident ended with Rodriguez getting a ticket.

She says she accepts responsibility for going through a red light, but the officers’ actions were unnecessary.

“Someone slamming their bike into me, trying to make me crash, and then holding a can of pepper spray, that’s ridiculous, that’s excessive force.”

Eyewitness News sent the video to Penn Police.

Maureen Rush, Superintendent of Penn Police, says, I saw the clip that was on the gentleman’s website and that will be part of the investigation.”

Penn Police say they are in the middle of their “Share The Road” campaign and the officer was enforcing the traffic laws, but they are looking into the other allegations

“We take great pride in the work that our officers do. They are truly professionals and they have a job to do and we make sure that they do that job.”

Sarah counters, “It was completely the opposite of what cops are supposed to do. They are supposed to calm down the situation, not escalate it and make it worse and make you feel threatened.”

UPenn police will continue to investigate.

They plan to interview all parties involved.

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