The IDF still does not know what caused the tank disaster in southern Lebanon that killed four soldiers, including the commander of Battalion 52, in the opening event of the fighting there and amid the resulting international reactions. Because of the combat conditions and the danger to troops, access to the damaged tank remains very limited, and the relevant teams have not yet been able to reach it, tow it away, or determine exactly what happened.
At first, the army suspected an explosive charge, but an IED large enough to severely damage a tank, weighing hundreds of kilograms, would have required a special Hezbollah operation, and perhaps a failure in IDF efforts to prevent such placement. The army does not believe that scenario is highly likely.
A second possibility examined was an advanced anti-tank missile, such as a Kornet, which Hezbollah uses frequently. Initial findings partially ruled that out. Investigators also considered the possibility of a drone. Hezbollah has a suicide drone fitted with an anti-tank warhead that can penetrate a tank.
A fourth theory, now under review but likely to be examined in full only once the tank can be accessed or pulled back, is that the tank itself suffered a malfunction that led to the explosion and the casualties. In that case, the opening of the battle day would have been caused by some technical failure in the equipment rather than hostile action by Hezbollah or any other organization against IDF forces.