Homicide investigators are now looking into the case of Autumn Marie Klein, a doctor at the University of Pittsburgh Medical Center who died of cyanide poisoning on April 20, CBS Pittsburgh reports. According to the station, Klein's husband, Dr. Robert Ferrant, called 911 on April 20 to report his wife had a heart attack. It was later determined that "extremely high levels of cyanide" were found in Klein's blood and ultimately caused her death.
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