The deaths of Nadeem Nawara, 17, and Mohammad Salameh, 16, spurred international calls for investigation after video footage of their shootings at a Nakba Day demonstration indicated they posed no threat to Israeli police.
The incident occurred in the West Bank on Nakba Day, May 15, on which Palestinians commemorate their displacement after Israel's declaration of independence in 1948.
Israeli security forces have maintained only plastic-coated steel rounds -- and not live ammunition -- were used at the event, adding their investigation was continuing.
A postmortem examination of the exhumed body of Nuwara indicated he sustained wounds consistent with live ammunition. He was exhumed and examined Wednesday.
Israel's Channel 10 television station, quoting unnamed military sources, suggested officers interviewed after the incident lied about the use of live rounds.