The missile under development is believed to be based on Iran’s Kheibar Shekan, a precision-guided ballistic missile first unveiled in Tehran in 2022.

If successfully developed, the Houthi weapon could have a range of around 1,200 miles, putting Saudi Arabia and Israel within reach, the report said.

The findings, reported by Conflict Armament Research and cited by the Journal, point to the growing ability of the Iran-backed group to manufacture its own weapons instead of relying entirely on supplies from Tehran and its regional allies.

Chinese components seized in Yemen

Conflict Armament Research, which investigates weapons and their supply chains in conflict zones, based its findings on information provided by Yemeni authorities following the interception of two shipments last year.

The consignments contained missile-related equipment concealed among other goods.

The components included custom-made metal parts for the missile’s motor and airframe, stabilising fins and elements of a solid-propellant rocket motor associated with the Kheibar Shekan series.

Authorities also seized tools, testing equipment and raw materials, including heat-resistant material used to protect parts of a missile from the extreme temperatures generated during flight.

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Shipping documents examined by the investigators identified a Chinese precision-metal manufacturer that advertises expertise in producing customised aerospace components. The report did not name the company.

Fabian Hinz, a senior analyst at Conflict Armament Research, told the WSJ that the imports could indicate that the Houthis have begun manufacturing missiles or are attempting to do so.

However, the extent of their progress remains unclear because their weapons facilities are heavily concealed.

How dangerous could the missile be?

The Iranian Kheibar Shekan is considered more capable than some other Iranian missiles because it can manoeuvre to evade air defence systems.

Certain versions can separate the section carrying the warhead during the final stage of flight, allowing it to adjust its direction as it approaches a target.

Analysts and officials cited in the report said the weapon can travel at speeds of around 6,000 miles per hour.

A missile with a range of approximately 1,200 miles would give the Houthis the potential to strike targets deep inside Saudi Arabia and reach Israel. Medium-range ballistic missiles could also carry larger payloads than some cruise missiles and drones.

The group has gradually expanded its domestic weapons manufacturing capabilities after years of relying on Iran and Hezbollah for missile supplies, according to weapons experts.

Chinese companies have emerged as a major source of goods seized while being shipped to the Houthis, according to UN reports and data compiled by arms experts. Some components have civilian applications, while others are specifically designed for missile systems.

China has said it complies with the UN arms embargo on the Yemeni group. However, the growing use of Chinese-origin components has raised questions about the ability to prevent dual-use technology from reaching armed groups.