Also in Australia, almost 1,000 demonstrators joined a protest rally in Melbourn dubbed "Free Palestine" to censure Israeli regime's brutal violence - including live fire - used against Palestinian protesters in occupied territories in recent days. It has warned that anybody approaching the border fence is risking their lives.
"Following the earlier report regarding the suspects who infiltrated [into] Israel through the security fence near the Northern Gaza Strip, IDF troops located two explosive devices placed by the terrorists at the scene", an Israel Defense Forces statement said.
Thousands of Palestinians have been staging demonstrations on Gaza Strip's eastern border with Israel against the decade-long Israeli occupation of Palestinian lands since last week.
Israeli Defence Minister Avigdor Lieberman said Sunday there were "no innocent people" in the Hamas-run Gaza Strip after Israeli soldiers shot and killed 30 Palestinians during 10 days of protests.
The Israeli daily Haaretz quoted Israeli army sources as saying on Saturday that they would react forcefully if the alleged attempts to damage the fence continued.
Hamas leader in Gaza, Yehiyeh Sinwar, visited the Khuzaa camp, receiving a hero's welcome.
It says Hamas is exploiting the mass marches as a cover for attacking the border fence and has vowed to prevent a breach at all costs. Israel has come under mounting criticism for shooting dead unarmed Palestinian civilians protesting peacefully.
Twenty-nine Palestinians have been killed since the protests began on 30 March along the frontier of the Gaza Strip.
The blockade has made it increasingly hard for Hamas to govern.
The Palestinian deaths have elicited scant concern in Israel, which has been the target of thousands of rocket strikes from Gaza over the past few years. "Palestinian photographer Yasser Mourtaja was wearing a vest marked "Press": he was obviously the victim of an intentional shot", said Christophe Deloire, the Secretary General of Reporters Without Borders (RSF), on Twitter.
Haim Jelin, a legislator from Israel's opposition centrist Yesh Atid party, and a resident of nearby Kibbutz Beeri, agreed with the government in rejecting United Nations and European Union calls for an inquiry into the deaths of protesters.
"The resort to violence must stop", Bensouda said.
Yaser Murtaja was shot in the abdomen near the border with Israel while covering demonstrations by Palestinian refugees.
Bensouda added that her office had launched a "preliminary" probe ahead of a possible prosecution over the use of force "in Palestine" in recent years.
Hamas may capitalize on any hatred of Israel amongst Gazans, over half of whom are descendants of refugees from what's now Israel. Mladenov stressed the need to ensure that "excessive force is not used, and the need to ensure that children are not deliberately put in harm's way", Dujarric said.
The Great March of Return is due to continue until May 15, the day Palestinians call the Nakba or Catastrophe, marking the displacement of hundreds of thousands of Palestinians in the conflict surrounding the creation of Israel in 1948.