About dozen Palestinian fighters tunnelled under the Gaza border last night, emerging near an Israeli community, the Israeli military said.
Video released by the IDF appears to show the fighters emerging from underground before being shot at.
At least one of the fighters was killed when Israeli aircraft bombed the group.
A five hour humanitarian ceasefire is currently in operation, at the request of the United Nations.
It's been an emotionally exhausting day in Israel and Gaza as hopes for peace were raised then dashed then raised then dashed again.
In the court of international opinion, this is how Israel wins a battle and still manages to lose the war.
Until the Israelis and the Palestinians find a way of resolving the underlining conflict this will not be more than a pause.