The Turkish government said on Monday that it was against Iraq's Kurdistan region splitting away from Baghdad, after Sunni militants seized a vast swathe of territory in Turkey's conflict-torn neighbor.

"The government is very closely monitoring the developments in Iraq," Deputy Prime Minister Bulent Arinc told reporters after a cabinet meeting. 

Israel on Monday confirmed finding the bodies of three teenagers who disappeared in the southern West Bank on June 12, blaming the Palestinian Hamas movement for their kidnapping and murder.

"During the search for Eyal Ifrach, Gilad Shaer and Naftali Frankel, the IDF discovered 3 bodies near Hebron," the Israeli army said in a statement on Twitter.

Israel issued a brusque warning to Hamas on Monday, demanding it prevent rocket fire from Gaza as fears grew of a new confrontation around the coastal Palestinian enclave.

The military said an estimated 14 rockets slammed into Israel early in the morning, although the last struck at around 8.20 am (0520 GMT). Nobody was hurt.

Hundreds of illegal African immigrants began a hunger strike on Monday after Israeli police forcibly broke up a sit-in they were staging along the Egyptian border.

Around 1,000 Africans, mostly from Eritrea and Sudan, had marched Friday to the border and set up a makeshift camp to protest against their "inhuman and unlimited" detention at Holot facility.

At least 14 rockets and mortar rounds fired by militants in Gaza struck southern Israel on Monday morning, causing no injuries but damaging a home, the army said. 

The latest incident added to the already-high tension in the area which has seen a surge in rocket fire over the past two weeks. 

Israeli Prime Minister Benjamin Netanyahu asked the international community on Sunday to support Jordan in the fight against "Islamic extremism" and to back the independence of Iraq's Kurds.

"We need to support efforts by the international community to strengthen Jordan and support the aspirations of the Kurds for independence," Netanyahu said in a speech to the Institute of National Security Studies think-tank in Tel Aviv.

An Israeli drone strike Sunday killed a Palestinian militant in Gaza, Palestinian security officials said, in the latest air raid on the coastal enclave.

An army spokesman said the raid targeted "terrorists" who had been preparing to fire rockets at Israel.

Israel is "ready" to expand its operations in Gaza, Prime Minister Benjamin Netanyahu warned Sunday after the air force struck 12 targets overnight following a surge in militant rocket fire.

Speaking to ministers at the weekly cabinet meeting, the Israeli premier said the almost-nightly military strikes on Gaza could be expanded should the need arise.

A rocket fired from the Gaza Strip on Saturday hit an industrial zone in Sderot in southern Israel, setting a building on fire but without causing casualties, police said.

Spokesman Micky Rosenfeld told Agence France Presse a second rocket struck open ground.

More than 1,000 illegal African immigrants in Israel staged a sit-in Saturday near the southern border with Egypt after a protest march against conditions in their internment camp.

"We are going to stay near the border with Egypt until a solution is found so our rights are respected," a statement by asylum-seekers at the Holot camp in southern Israel said.