LONDON — The U.K. Ministry of Defence has paused all use of the Ajax armoured vehicle after another member of the armed forces was injured during safety trials.

The Ajax program was suspended in November for training purposes after around 30 soldiers became ill from noise and vibration during an exercise.

In a written statement Thursday, Defense Minister Luke Pollard outlined that trials of the equipment had continued in order to provide a baseline comparison for the 23 vehicles associated with reports of sickness last month.

Another soldier then became ill with “vibration symptoms” on December 12 at the Bovington training site in south-west England, according to the statement.

Pollard said: “This additional report of an injury is a serious concern to me so, out of an abundance of caution, and to ensure the safety of our personnel, I have directed a pause on all Ajax trials.”

The minister added that he would assess if trials can be restarted in the new year, while a series of investigations into the original incidents continue.

Defence Secretary John Healey has not ruled out scrapping the multibillion pound program led by General Dynamics, which was originally scheduled to launch in 2014.

Pollard confirmed that the MoD’s Defense Investment Plan (DIP) will take into account the latest information regarding the Ajax initiative, which is worth £6.3 billion overall.

The department is currently at loggerheads with the Treasury over DIP, which was originally due to be published in the fall but is now delayed to 2026.