DULUTH - Gwinnett County police have ruled the death of a 27-year-old woman, who collapsed in a parking lot, a homicide.<br>
<br>
Sarah Lynn Wells collapsed and struck her head after seeing four burglars breaking into her car at Gwinnett Place mall on March 3.<br>
<br>
The chief forensic investigator with the Gwinnett Medical Examiner's Office -- Ted Bailey -- said Tuesday that Wells died of a heart attack caused by stress.