Case overview
In September 1984, members of the Rajneesh movement deliberately contaminated salad bars in The Dalles, Oregon, with Salmonella typhimurium, sickening 751 people in the first and largest bioterror attack in United States history. The poisonings were orchestrated by leaders within the Rajneeshpuram commune to suppress voter turnout in an upcoming county election. Two senior members were later convicted on federal charges including conspiracy to commit murder, though no deaths resulted from the attack.
The commune and its leadership
Rajneeshpuram was established in 1981 on the 64,000-acre Big Muddy Ranch in Wasco County, Oregon. The intentional community was built around Bhagwan Shree Rajneesh, an Indian spiritual teacher who attracted thousands of followers worldwide. By 1984, the commune housed approximately 2,500 permanent residents and operated its own infrastructure, including a private security force, airstrip, and municipal services.
Ma Anand Sheela, born Sheela Ambalal Patel, served as Rajneesh’s personal secretary and the de facto leader of daily operations at Rajneeshpuram. She controlled access to Rajneesh, managed the commune’s finances, and directed its expansion efforts. Former members later described an environment where dissent was discouraged and loyalty to leadership was enforced through surveillance and strict hierarchies.
The commune’s relationship with Wasco County residents deteriorated rapidly. Local officials challenged Rajneeshpuram’s incorporation as a city, arguing it violated the separation of church and state. Zoning disputes, immigration fraud allegations, and cultural clashes deepened tensions between the commune and surrounding communities.
The election strategy
By mid-1984, commune leaders faced mounting legal challenges to Rajneeshpuram’s municipal status. Sheela and her inner circle developed a plan to gain control of the Wasco County Commission through the November election. Their strategy involved busing in thousands of homeless people from across the country, registering them as Rajneeshpuram voters, and using their votes to install commune-friendly commissioners.
The Share-A-Home program brought approximately 3,000 homeless individuals to the ranch between July and October 1984. Commune members promised housing, meals, and employment. Recruits were transported from cities including Los Angeles, San Francisco, Portland, and Seattle. The program drew immediate scrutiny from county officials and state election authorities who questioned the legality of the mass voter registration effort.
Sheela and her lieutenants recognized that even with the homeless population, they might not secure enough votes to win the election. They needed to reduce turnout among The Dalles residents who would likely vote against Rajneesh-affiliated candidates. That calculation led directly to the decision to use biological weapons.
Acquiring and testing the pathogen
Ma Anand Puja, a nurse who served as Rajneeshpuram’s health officer, obtained cultures of Salmonella typhimurium from a medical supply company using the commune’s clinical laboratory credentials. The bacteria, which causes severe gastrointestinal illness, was cultured in Rajneeshpuram’s medical facilities throughout the summer of 1984.
Before the September attacks, commune members conducted test runs. In August 1984, they contaminated water glasses at the Wasco County Courthouse, sickening two county commissioners. They also spread bacteria in grocery stores and targeted the home of a county executive, though those attempts produced limited results.
The trial runs demonstrated the viability of foodborne contamination. Leaders refined their methods and selected salad bars at restaurants as the primary distribution points. Salad bars were self-service, minimally supervised, and frequented by local residents.
The attack
Between September 9 and September 18, 1984, commune members contaminated salad bars at ten restaurants in The Dalles. The targeted establishments included Taco Time, Shakey’s Pizza, and several other locally popular dining spots. Attackers used small vials to pour liquid cultures of Salmonella directly onto produce, salad dressings, and coffee creamers.
The first wave of illnesses appeared within days. Victims experienced fever, diarrhea, nausea, and severe abdominal cramping. By late September, local hospitals were overwhelmed with patients presenting identical symptoms. Public health officials initially suspected a natural outbreak caused by contaminated water or food supply chain failures.
The Oregon Health Division and the Centers for Disease Control and Prevention launched investigations as case numbers climbed past 700. Laboratory analysis confirmed Salmonella typhimurium in stool samples from multiple patients. Epidemiologists traced the common link to restaurants in The Dalles but could not immediately identify the contamination source.
No deaths occurred, though 45 people required hospitalization. The attack remains the largest bioterrorism incident in United States history and the single largest foodborne outbreak involving intentional contamination.
The investigation
Federal and state investigators initially treated the outbreak as a public health emergency, not a criminal act. The scale and simultaneous timing across multiple locations raised suspicions, but authorities lacked evidence of deliberate poisoning. The investigation shifted in September 1985 when Sheela and several top lieutenants abruptly fled the United States amid growing internal discord at Rajneeshpuram.
Rajneesh himself broke his years-long public silence in September 1985, accusing Sheela and her inner circle of crimes including wiretapping, arson, attempted murder, and the bioterror attack. He invited law enforcement to investigate the commune fully. FBI agents and Oregon State Police executed search warrants at Rajneeshpuram in October 1985.
Investigators discovered a clandestine laboratory in Puja’s quarters containing vials of Salmonella typhimurium, bacterial growth media, and detailed notes on pathogen cultivation. They also found evidence of other criminal activities, including plans to assassinate United States Attorney Charles H. Turner by crashing an airplane into his building, wiretapping equipment monitoring commune members and outsiders, and stockpiles of weapons.
The evidence confirmed Rajneesh’s allegations. Sheela and Puja had orchestrated not only the bioterror attack but a broader conspiracy involving surveillance, immigration fraud, attempted murder, and other felonies designed to protect and expand commune leadership’s power.
Prosecution and aftermath
Sheela and Puja were arrested in West Germany in October 1985 and extradited to the United States. In July 1986, both pleaded guilty to federal charges. Sheela was convicted of attempted murder, assault, conspiracy, wiretapping, immigration fraud, and making false statements to federal officials. She received concurrent sentences totaling 20 years but was released in December 1988 after serving 29 months.
Puja pleaded guilty to poisoning, assault, conspiracy, and wiretapping. She received a sentence of four and a half years and served approximately three years before her release. Other commune members involved in the conspiracy received lesser sentences or immunity in exchange for testimony.
Rajneesh was arrested in October 1985 while attempting to flee the country. He pleaded guilty to immigration fraud charges, paid a $400,000 fine, and agreed to leave the United States. He was deported in November 1985 and eventually returned to India, where he died in 1990. The Rajneeshpuram commune disbanded shortly after his departure.
Wasco County filed civil suits against commune entities and recovered portions of funds used in illegal activities. The land was sold, and most commune structures were dismantled or repurposed. The Oregon government voided Rajneeshpuram’s municipal incorporation in November 1985.
Legal and public health impact
The Rajneeshpuram bioterror attack prompted significant changes to public health surveillance and bioterrorism preparedness protocols. The CDC revised outbreak investigation procedures to include consideration of intentional contamination as a potential cause, particularly in cases with unusual epidemiological patterns.
Federal agencies developed new frameworks for coordinating responses between public health authorities and law enforcement when criminal activity is suspected in disease outbreaks. The case demonstrated vulnerabilities in food service environments and led to enhanced training for health inspectors on identifying signs of deliberate contamination.
The attack also influenced legal definitions and prosecutorial approaches to bioterrorism. The case established precedents for charging individuals under existing assault, conspiracy, and weapons statutes even before comprehensive federal bioterrorism laws were enacted in the 1990s and expanded after 2001.
Where to look next
- Documentary: “Wild Wild Country” (Netflix)
- Book: “The Rajneesh Chronicles” by Win McCormack
- Podcast: “Rajneeshpuram” (“Bundyville”, Longreads and Oregon Public Broadcasting)
