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A woman pulled over to help man in distress. Her car rolled over and killed him.

Michael Phillips 34, was on a sidewalk in Phoenix, Arizona, when he appeared to be having a medical emergency.

An Arizona woman who pulled over to help a man believed to be having a medical emergency forgot to put her car in park. The vehicle ran over the man, killing him, police said.

The woman, who has not been identified, was trying to assist 34-year-old Michael Phillips on Thursday afternoon when the incident occurred in Phoenix.

Phillips was standing on a sidewalk when he appeared to have an undisclosed medical event, police said in a press release. As the woman, 55, stopped her vehicle Phillips fell over into the street.

Police said that "in her haste to assist, the woman exited her car, failing to put the vehicle in park." It rolled forward striking Phillips. He was taken to the hospital, where he died. The woman was not injured.

A medical examiner will determine Phillips' cause of death, police said.

The woman remained on the scene, and impairment does not appear to be a factor, the Phoenix Police Department said in its release.