Israel has further tightened its blockade on the Gaza Strip, preventing gas and fuel deliveries through its only commercial crossing with the Palestinian besieged enclave a week after they announced the closure of the crossing.
The strikes marked a stronger Israeli reaction to the dozens of balloons and kites carrying combustion materials that have been sent from Gaza since April.
Meanwhile, Palestinians resistance forces have responded to the latest Israeli regime's aggression by firing more than 170 rockets.
The Israeli military lifted its restrictions along the Gaza border Sunday, indicating it had accepted an Egypt-mediated cease-fire that ended a 24-hour round of fighting with Hamas militants that had threatened to devolve into all-out war.
Later, Mr Lieberman announced that Kerem Shalom would be closed for fuel deliveries and the distance which Gaza's fishermen would be allowed from the coast reduced from six nautical miles (12 km) to three.
The goods crossing, known as Karam Abu Salem, will remain open only for food and medicine on a case-by-case basis.
Lately, Israel was criticized by a United Nations human rights body for its killing of protesters in Gaza and treatment of Palestinians, declaring it a "war crime" under the Statute of Rome.
The practice has in effect destroyed much of the agricultural and fishing sector of the blockaded coastal enclave, which has been under an Israeli air, land, and sea blockade for 10 years.
Israel also warned that unless the balloons stop, it is going to escalate its punitive measures and also close Beit Hanoun (Erez) crossing for individuals.
In response, Israeli army artillery stationed on the border bombarded a military facility in northern Gaza, with no injuries reported, said local media and security sources.
Over the weekend Hamas and Israel exchanged heavy fire, with Israel saying more than 200 rockets and mortar shells were fired since Friday night. Over 130 Palestinians have been killed by Israeli fire since the protests began on March 30. It went on to assert that Israeli forces had deliberately killed minors with the use of live ammunition.
Netanyahu met Monday in Sderot with the heads of the local municipal councils of communities located in the Gaza border area.
On Saturday, Israel launched a series of attacks against Gaza, targeting Palestinian military positions, killing two and injuring 18 people.
Israel has carried out several military operations against Palestinian militants in Gaza, with thousands killed.
Israel blamed Hamas for the escalation, pointing to months of protests and clashes along the border that its military argues the Islamist movement is seeking to use as cover for attacks.
Mladenov also assured Palestinians that the UN will not leave Gaza, despite the "significant financial problems" faced by the UN Relief Works Agency (UNRWA), which provides humanitarian aid, education, social services and medical care to Palestinian refugees in the West Bank, Gaza Strip, Jordan, Syria and Lebanon.