The Brief

A woman was shot and killed outside a Dallas PetSmart on Tuesday following an argument that started over the suspect not saying "thank you" for a held door.

The victim, Cecilia Simpson, was shot multiple times after the dispute escalated into a physical fight in the parking lot.

Police have arrested 22-year-old Keona Zachyua Hampton, who is booked into the Dallas County Jail; a bond has not yet been set.

DALLAS - An arrest affidavit for a shooting outside a PetSmart store in Dallas on Tuesday reveals the situation started when the victim opened the door for the suspect, and the suspect didn't thank her, according to a witness.

Fatal Lack of Gratitude

The backstory:

According to Dallas Police, the shooting happened around 1 p.m. in the 3500 block of West Wheatland, in the

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