Medical officials identified the man as a member of Fatah, which is led by Mahmoud Abbas, the Palestinian president.

An Israeli army spokesman said: "He approached the fence, armed with a rifle and grenades, so our troops opened fire."

A group of Palestinian fishermen was also shot at by Israeli warships on Wednesday. Three fishermen were wounded.

Peace effort

Palestinian fighters in Gaza have fired about 20 rockets into Israel during the truce, causing no casualties.

Medics have said previously that at least three Palestinians have been wounded by Israeli fire since the start of the truce.

The Israeli army says it shot one man who was allegedly tampering with the security fence on the Israel-Gaza border.

Since the Gaza ceasefire came into effect, Israel has launched several raids in the occupied West Bank, where there is no truce.