Thousands of Palestinians are estimated to be missing during the 14-month war, highlighting the opacity in how the military keeps track of who it separates or detains.
A former South Korean defense minister has been formally arrested over his alleged collusion with President Yoon Suk Yeol and others in imposing martial law last week.
The testimony is another low point for Israel's longest-serving leader, who also faces an international arrest warrant for alleged war crimes in Israel's war in Gaza.
Critics accuse Israel of violating its 1974 ceasefire with Syria for a potential land grab, following the dramatic downfall of President Bashar al-Assad.