PITTSBURGH (KDKA) – Police are asking for the public’s help finding a man who could be a valuable witness in the murder of two sisters in East Liberty more than a week ago.

Police released surveillance footage from the Port Authority bus that Susan Wolfe had ridden home on the evening of Feb. 6 – the night she and her sister were murdered in their Chislett Street home.

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He is seen exiting the bus at the Negley Avenue stop in East Liberty.

Officials want to be clear the man is not a suspect, but someone they say could help provide essential information to detectives.

He’s seen wearing a drawstring backpack and jacket with a Steelers logo on it.

Police had said previously that they were searching for a man who appears to follow Susan Wolfe home after getting off the same Port Authority bus.

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Wolfe and her sister, Sarah Wolfe, were found the next day shot to death in the home’s basement.

Police believe Susan Wolfe, a teacher’s aide, arrived home first and was shot by the suspect, then the suspect waited inside the home for two hours for Sarah Wolfe, a UPMC psychiatrist, then shot her.

Police also said they are looking into Susan Wolfe’s possible relationship with homeless men.

Sources confirm she had a “deep compassion” for people in need.

Anyone with information is asked to call police at 412-323-7161.

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