According to the IDF, the blast on a Rishon Lezion base on Monday was caused by an anti-tank missile captured from Hizbullah during the Second Lebanon War. An officer and an NCO, who were testing the missile, were severely injured in the blast. The missile exploded prematurely, the military said. The IDF routinely tests captured weaponry. There was particular interest in anti-tank missiles, which caused many casualties during the war. An investigation of the exact circumstances of the blast, as well as of the specific flaw in the tested missile, is being conducted.