Mary Anna Colwell, a 92-year-old female, passed away on Tuesday, December 28, 2021, while a resident at Belair Healthcare and Rehabilitation Center in Lower Burrell, Pennsylvania. For nearly two years, her family believed she had died of natural causes. However, the circumstances surrounding her death took a dark turn when investigators from the state Attorney General's Office began looking into it as a potential criminal act.
The investigation led to former nurse Heather Pressdee, who wa
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