SEPTA police say it happened around 11:30 a.m. Wednesday at the Lombard-South Station at South and Broad streets.
According to police, a man descended the steps and fired two shots.
"When we arrived on location officers secured the scene and found two gunshots were actually fired in the station, no one was hit," said Lt. Mike Boring of the SEPTA police.
Based on surveillance video, police say the man then fled the station and remains on the loose.
Prior to the shooting, authorities say a woman told a cashier inside the station that there was a man outside who either had a gun or had fired a gun. It's not clear at this time which statement the woman actually said.
The woman then went through the turnstile and took a train. Police are looking to speak to her to find out exactly what she saw.
"We are looking for her, we have not made contact with her. She has not contacted us. She went ahead and got on a train, she got on a train she is not injured either," added Boring.
Trains were bypassing the station in both directions for a short time; the station was reopened around 12:30 p.m.
Rider reaction was mixed. Some were concerned and others saying it could happen anywhere.
"Yes it is alarming especially early morning but it's a regular occurrence, especially up in Strawberry Mansion, unfortunately," said Kadeem Best of Strawberry Mansion.
Wesley Robinson of Northern Liberties added, "It does happen everywhere and like Center City sometimes seems like a place that seems you will be safe. So stuff goes down, like the Wawa, someone was stabbed recently too, now they close at 11.
South Detectives and SEPTA police are investigating.
Police say they have obtained images of the suspect firing the gun but have not released them.
Follow us on YouTube
Send a News Tip to Action News
Learn More About 6abc Apps