Previous Sheba Intelligence investigations exposed suspected chemical weapons activities, secret facilities, Iranian experts, hazardous material stockpiles, and allegations of toxic gas use in Yemen.
The Saudi-led coalition announced the destruction of a Houthi chemical facility used to mix and produce solid fuel for ballistic missiles, renewing scrutiny of earlier Sheba Intelligence investigations into suspected chemical and biological weapons activities in Houthi-controlled areas.
The coalition said it had also destroyed a ballistic missile components factory and an electronics assembly laboratory, as part of its campaign to dismantle the Houthis' missile capabilities.
Earlier Intelligence Findings
In August 2026, Sheba Intelligence reported that the Houthis had moved specialised chemical and biological protection, detection and decontamination equipment, stockpiled dual-use chemicals and trained personnel to handle hazardous materials.
In October, the platform reported intelligence concerning fortified underground facilities, including suspected rocket-fuel production sites near Sanaa, alongside other locations potentially linked to sensitive chemical activities.
A subsequent investigation published on October 28 examined intelligence documents concerning suspected chemical facilities in Hamdan district, laboratory equipment and chemicals allegedly seized from Taiz University, and foreign specialists reportedly associated with sensitive military programmes.
Separately, Sheba Intelligence disclosed details of a closed Houthi-Iranian military meeting in Sanaa, during which possible Iranian support involving chemical and biological weapons was reportedly discussed. The report did not establish that such weapons had been delivered.
Suspected Mustard Gas Use in Taiz
On November 2, Sheba Intelligence reported preliminary intelligence suggesting the possible use of mustard gas by Houthi forces in Taiz.
According to the source, suspected chemical munitions had been transferred from Sanaa to Taiz under the supervision of the Houthi Security and Intelligence Service.
The allegations followed reports of unexplained suffocation and loss of consciousness among personnel exposed to suspected toxic shells. No independently verified laboratory findings have confirmed the use of mustard gas.
Questions Surrounding Houthi Chemical Infrastructure
The coalition's latest announcement marks a significant development in its stated targeting of Houthi missile production infrastructure, particularly facilities involved in manufacturing solid rocket propellant.
However, solid rocket-fuel production is distinct from chemical or biological weapons manufacturing, and the coalition has not identified the destroyed facility or established any connection to the sites previously investigated by Sheba Intelligence.
The announcement nevertheless brings renewed attention to the Houthis' suspected chemical infrastructure, foreign technical support and unresolved allegations documented in earlier Sheba Intelligence investigations.
