Passerby shot at while trying to help woman being robbed on dog walk in Center City, police say

A Good Samaritan's brave act almost made them the victim of a shooting on a Center City street earlier this month.

Police say a woman was walking her dog on the 700 block of Taney Street on July 12 when a man robbed her at gunpoint, taking her purse.

A passerby started yelling as they saw the suspect following the woman, according to police.

When they started walking towards the scene, the suspect reportedly fired his handgun in that direction. The passerby took cover, and was not injured.

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Investigators believe the same armed man is responsible for at least 8 other robberies from June 26 to July 18 between 21st and 24th streets. 

Authorities consider the suspect armed and dangerous and he should not be approached if spotted. 

Anyone with information on the suspect's whereabouts is asked to contact the Philadelphia Police Department immediately.