Dispute over woman not saying 'thank you' allegedly led to fatal shooting: Affidavit

A woman was fatally shot during an altercation at a Texas shopping center that allegedly began when the victim became upset at the alleged shooter for "not saying thank you" when she held a door open for her, according to court filings. The shooting occurred Tuesday afternoon in the parking lot of a shopping center in southwest Dallas, according to the arrest warrant affidavit obtained by ABC News. Cecilia Simpson, 44, was shot multiple times, according to Dallas police. She was transported to a local hospital, where she was later pronounced dead. Police said the alleged shooter, 22-year-old Keona Hampton, left the scene before officers arrived. She was located later that day and arrested for murder, police said. A witness told homicide detectives that she and Simpson were leaving a store