Fifteen industrial spray drones walked out of a warehouse in Harrison, New Jersey in March 2026, taken by people using forged documents, and the FBI’s counterterrorism division is now running the investigation.
Access was gained through forged paperwork, not forced entry. Each drone weighs between 90 and 170 pounds fully loaded. Moving fifteen required a truck, lifting equipment, and prior knowledge of exactly where the aircraft were stored. The FBI’s Newark field office has declined all comment. New Jersey’s Office of Homeland Security and Preparedness has not responded to press inquiries. No suspects have been publicly named as of April 2026.
Agricultural spray drones are precision liquid dispersal platforms, purpose-built to carry large volumes of fluid across a defined area along a pre-programmed GPS route, with no pilot anywhere near the target. A single unit carries up to 31 gallons and can saturate 15 acres in eight minutes at low altitude, running on full autopilot from takeoff to landing. The operator programs the coordinates and the machine executes the entire flight. Nozzle arrays along the undercarriage release calibrated droplet sizes across the programmed path, adjusting automatically for speed and altitude. Nothing about that process requires specialist knowledge beyond a GPS coordinate and a target zone.
The Bulletin of the Atomic Scientists assessed this threat directly in 2023, noting that agricultural spray drones arrive as a complete off-the-shelf package: chemical tanks, pumps, hoses, nozzles, and autonomous GPS navigation, all pre-assembled and commercially available without restriction. A single drone pre-programmed over a crowded outdoor space carries enough liquid payload to expose thousands of people before anyone on the ground registers what is happening. Fifteen machines running simultaneous autonomous routes across multiple target zones multiplies that exposure with no flight training required and no operator present to identify, track, or intercept. The Bulletin specifically identified fentanyl derivatives as one realistic payload, available on the black market, lethal at concentrations well within what a standard agricultural tank can carry and a standard nozzle array can disperse at low altitude over an open area.
Security planners tracked this threat vector from the early 2000s onward, when manned crop-duster aircraft drew sustained attention after September 11 as potential dispersal platforms for biological or chemical agents. US Army research published through Air University Press identified aerosol delivery via commercial crop sprayers as among the most effective methods available for disseminating biological agents, with low-altitude release producing particle sizes small enough to penetrate directly to the lungs. That research was written about manned aircraft. In 2026, no pilot is needed. The autonomous flight systems now standard on commercial agricultural drones execute the same low-altitude dispersal profile with greater positional accuracy than a human pilot, along a pre-set GPS path that can be uploaded in minutes from any laptop.
The machines stolen from Harrison were manufactured by Hylio, a US-based agricultural drone company. Hylio units carry between 16 and 22 litres of liquid payload and cover between 15 and 20 acres per hour on autonomous flight planning. Fifteen of them operating simultaneously cover a combined area of up to 300 acres in a single coordinated deployment, with each machine navigating its own pre-programmed route independently. A stadium, a transit hub, a public park during a summer event: any open or semi-enclosed space with limited escape routes and high pedestrian density fits within that operational footprint. The machines do not need to land. They do not need to return to an operator. They execute the programmed route and the dispersal happens whether anyone is watching or not.
New Jersey was already living with unexplained drone activity through late 2024, when hundreds of unidentified aerial vehicles were logged over the state across several weeks, including flights recorded near military installations and critical infrastructure sites. Law enforcement agencies across the state filed reports describing large unidentified drones operating at night over sensitive locations. No official explanation produced by federal or state agencies fully accounted for the scale, duration, or origin of those flights. The FAA banned drone operations over significant portions of New Jersey airspace during that period. Three months after those sightings faded from public attention, fifteen industrial sprayers capable of blanketing 300 acres in a single coordinated pass vanished from a Hudson County warehouse on forged paperwork.
The FAA regulates the operation of agricultural drones under Part 137 certification but places no mandatory security requirements on storage facilities. No federal regulation currently requires tracking devices, geofencing hardware, or inventory controls on commercial spray drone fleets held at ground level. The fifteen machines in Harrison had none of those protections in place at the time of the theft. A terrorist organisation or state-linked proxy acquiring fifteen autonomous spray platforms faces no regulatory barrier between possession and deployment. The machines arrive pre-configured for exactly the kind of low-altitude, wide-area liquid dispersal that counterterrorism planners have classified as a credible mass-casualty delivery method for more than two decades.
Japan’s Aum Shinrikyo cult attempted to modify a helicopter to spray toxic gas in the early 1990s. The technology available to them was primitive and the attempt failed. The machines stolen from Harrison in March 2026 are factory-built for the dispersal task Aum Shinrikyo was trying to engineer from scratch, GPS-guided, autonomously flown, and capable of covering 15 acres per unit in under ten minutes. Fifteen of them represent a coordinated dispersal capability that no non-state actor has previously had access to in a single acquisition.
All fifteen drones remain unaccounted for as of April 2026. The FBI has named no suspects and released no details of the investigation’s current status. The forged documents used to remove the machines from the warehouse have not been publicly described. Hudson County law enforcement has not confirmed any leads.
