Crowds have been massing at the border between Israel and Gaza, and Israeli soldiers killed a man they said was trying to cross the border.
Israeli troops fired Friday to push back Gaza crowds surging toward Israel's border fence with the Hamas-ruled territory, killing one Palestinian and wounding 19 in the first violence since a truce between Israel and Hamas took hold a day earlier.
Hamas security tried to defuse the situation and keep the crowds away from the border, signaling the incident is unlikely to jeopardize the Egyptian-brokered cease-fire.
The truce, which calls for an end to Gaza rocket fire on Israel and Israeli airstrikes on Gaza, came after eight days of cross-border fighting, the bloodiest between Israel and Hamas in four years.
On Friday, hundreds of Palestinians approached Israel's border fence in several locations in southern Gaza.
In the past, Israel's military barred Palestinians from getting close to the fence, and soldiers routinely opened fire on violators to enforce a 300-meter-wide no-go zone meant to prevent infiltrations into Israel.
Since the cease-fire, growing numbers of Gazans have entered the no-go zone, testing expectations that such restrictions would now be lifted.
In one incident captured by Associated Press video, several dozen Palestinians, most of them young men, approached the fence, coming close to a group of Israeli soldiers standing on the other side.
Some Palestinians briefly talked to the soldiers, while others appeared to be taunting them with chants of "God is Great" and "Morsi, Morsi," in praise of Egyptian President Mohammed Morsi, whose mediation led to the truce.
At one point, a soldier shouted in Hebrew, "Go there, before I shoot you," and pointed away from the fence, toward Gaza. The soldier then dropped to one knee, assuming a firing position. Eventually, a burst of automatic fire was heard, but it was not clear whether any of the casualties were from this incident.
Most of those approaching the fence were young men, but the crowds also included farmers hoping they could once again farm lands in the buffer zone. Speaking by phone from the buffer zone, 19-year-old Ali Abu Taimah said he and his father were checking three acres of family land that have been fallow for several years.