Israeli tanks have entered the northern Gaza Strip, sparking fighting that killed one Palestinian and injured two.
AFP news agency reported that seven tanks had made a limited incursion 200m into Palestinian territory on Tuesday, sparking a shootout with militants.
Other reports suggested armoured vehicles and bulldozers were involved.
Hamas emergency services spokesman Adham Abu Salmiya said Amjad al-Zaanein, 23, had been killed by Israeli tank fire east of Beit Hanoun.
Local Palestinians said the casualties had been collecting stones to recycle into bricks when they came under fire.
Israel’s military has not commented on the reports of tank fire, but said Gaza militants had fired four mortar shells at Israel earlier on Tuesday.
Cross-border violence has escalated in recent weeks. Hamas, the Islamic militant group that rules the enclave, has appealed for calm, urging other militant factions to stop their attacks on Israel.
It is two years since a war in Gaza which left 1,300 Palestinians and 13 Israelis dead.