Five near-simultaneous explosions in Gaza on Sunday targeted members of the armed branches of Hamas and Islamic Jihad amid growing tensions between the Palestinian territory's rulers and extremist opponents.

There was no immediate claim of responsibility for the blasts that rocked an area in the north of Gaza City and destroyed five cars belonging to members of the Ezzedine al-Qassam and al-Quds brigades, the armed wings of Hamas and Islamic Jihad.

U.S. Defense Secretary Ashton Carter heads next week to Israel and Saudi Arabia -- a diplomatic charm offensives to two countries that have expressed serious concerns over the Iran nuclear deal.

Carter, who will also visit Jordan, will be renewing US security commitments in the region, some of which serve as a buffer to Iran's "destabilizing behavior," a senior Pentagon official said Friday.

Prime Minister Benjamin Netanyahu spoke to Palestinian President Mahmoud Abbas Friday for the first time in 13 months, wishing him a happy Eid al-Fitr and speaking of Israel's desire for peace.

Eid, which began Friday, is the holiday that follows on the Muslim fasting month of Ramadan.

A senior Hamas official said Friday there could be no new exchange talks with Israel until it frees dozens of prisoners it has rearrested since their release in a 2011 swap.

Ismail Haniya, a former Palestinian prime minister, said Israel had re-arrested at least 54 of the more than 1,000 prisoners freed in exchange for soldier Gilad Shalit, who was captured in a cross-border raid by Gaza militants in 2006.

Almost half of Israelis would support a unilateral strike to prevent Iran obtaining the atomic bomb, an opinion poll carried out after Tuesday's nuclear deal between Tehran and major powers found.

Nearly three-quarters of respondents in the poll published by the Maariv newspaper on Friday said they thought the agreement would accelerate Iran's development of a nuclear weapon, not prevent it as claimed by the powers.

The International Criminal Court on Thursday ordered its chief prosecutor to review a decision not to probe Israel's deadly raid on a Gaza-bound flotilla in 2010, saying "errors were made."

Fatou Bensouda late last year dropped the investigation leading to potential prosecution into the incident in which 10 Turkish activists were killed by Israeli commandos, saying the incident was "not of sufficient gravity."

British Foreign Secretary Philip Hammond on Thursday sought to reassure Israel over a nuclear deal between major powers and Iran, saying "robust measures" were in place to ensure its success.

Israel has long opposed any deal with its arch-foe Iran, and Prime Minister Benjamin Netanyahu lambasted the landmark agreement struck Tuesday between Tehran and six world powers as a "historic mistake."

Israel's military said its aircraft struck Hamas facilities in the Gaza Strip early Thursday after Palestinians fired a rocket from the territory into southern Israel overnight.

"Overnight, a rocket was fired from the Gaza Strip, targeting civilians in southern Israel," a military statement said, adding that the rocket fell on open ground near the city of Ashkelon and no injuries were reported.

Israel is responsible for the 2008 murder of a top security aide of Syrian President Bashar Assad, according to secret U.S. intelligence files.

Brigadier General Mohammed Sleiman was shot in the head and neck on August 1, 2008 by a small team of Israeli commandos as he enjoyed a dinner party at his luxury seaside home on the Syrian coast, said The Intercept website, citing the leaked files.

Israel has arrested five Palestinians accused of involvement in the murder of an Israeli in the occupied West Bank last month, the Shin Bet internal security service said Wednesday.

The alleged shooter, Mohammed Abu Shaheen, belonged to an armed group linked to Fatah, the party of Palestinian President Mahmud Abbas, Shin Beth said.