Zhu Ling ( , born 1973 ) is best known as the victim of an unsolved 1995 thallium poisoning case in Beijing , China .

Her symptoms were posted Sending to the Internet via a Usenet newsgroup by her friend from Peking University , Bei Zhicheng , and were subsequently proven Convincing to be caused Causation by thallium poisoning .

The fatalities resulted Causation from a multitude of tragedies Catastrophe , including automobile and maritime accidents Catastrophe , storm-related fires Catastrophe , carbon monoxide poisoning Bodily_harm , over-exertion , and exposure Catastrophe to cold .

In total , 909 individuals died Death in Jonestown , all but two from apparent cyanide poisoning , in an event termed `` revolutionary suicide '' by Jones and some Peoples Temple members on an audio tape of the event , and in prior recorded discussions .

All 40 of the insurgents were killed Killing , and up to 204 hostages died Death during the siege , including nine foreigners , due Causation to poisoning Bodily_harm by the gas .

Most deaths were attributed Causation to carbon monoxide poisoning Bodily_harm due to power generators or kerosene heaters being used Using indoors without proper ventilation .

The Chicago Tylenol Murders Killing were a series of poisoning Bodily_harm deaths Death resulting Causation from drug tampering in the Chicago metropolitan area in 1982 .

New York City resident James William Lewis was convicted Legality of extortion Committing_crime for sending Sending a letter to Johnson & Johnson that took Giving credit for the deaths Death and demanded Request $ 1 million to stop Preventing_or_letting them , but evidence tying him to the actual poisoning Bodily_harm never emerged Coming_to_be .

The actions of Johnson & Johnson to reduce Cause_change_of_position_on_a_scale deaths Death and warn Warning the public of poisoning Bodily_harm risks have been widely praised Judgment_communication as an exemplary public relations response Response to such a crisis Catastrophe .

The incident remains Presence controversial to this day ; the Whitmans are regarded Perception_active by some as pioneer heroes , while others see them as white settlers who had attempted to impose Action their religion on the Indians and otherwise intrude , even allegedly poisoning Bodily_harm them .