A video has emerged that appears to show a knife being kicked toward the body of a Palestinian attacker who was shot dead by an Israeli soldier in the West Bank, raising the possibility of evidence tampering.

The soldier, who faces charges of manslaughter, has said he felt the Palestinian posed a risk even though he was already lying on the ground wounded.

The video, which Israeli media aired Wednesday and said was presented by the prosecution, shows the knife skittering across the ground toward the dead Palestinian, indicating someone kicked it.

The case has left Israel deeply polarized, with some demanding the soldier face justice and others accusing the military of second-guessing a decision made in the field.

The March shooting came amid months of Palestinian attacks on Israelis.