Two IDF soldiers were killed and four were injured during a training exercise in the Golan Heights late Tuesday night, when the self-propelled howitzer flipped over while they were driving it, the army said.

As they traveled in their mobile cannon, the driver had to make a U-turn, but the self-propelled cannon went off its path and fell eight meters into a ditch, an IDF spokesperson said. 

As a result, two soldiers died while one was severely injured, one moderately wounded and the remaining two were slightly hurt.

The driver noted that the lights of the oncoming cars were “blinding him,” since their cannon was positioned head-on with other vehicles that were also taking part in the exercise.

As a precautionary measure, the military called off all exercises until Sunday. Moreover, they won’t allow the mobile cannons to drive after dark until further notice.

The incident is being investigated by the Military Police, in collaboration with two teams of experts. 

The two main questions raised by the army were: why did the vehicle go off path, and could the crash have been prevented?