GAZA CITY (Ma'an) -- The United States confirmed it had restocked Israel's supplies of ammunition, hours after finally sharpening its tone to condemn an attack on a United Nations school in Gaza that killed 16 people sheltering there.
Israeli airstrikes and shelling continued overnight and into the morning leaving 27 Gazans dead and dozens injured, bringing the 24-day death toll to 1,395 with 8,100 injured, according to the Ministry of Health. The Israeli military confirmed that 20 "sites" had been hit overnight.
The dead included six people, including Majdi Fseifis, 22, Hani Abduallah Abu Mustafa, 44, Naji Abdullah Abu Mustafa, 31, Hanan Youssef Abu Tiema, Maher Najjar, and Mahmoud Fuad Najjar killed in a bombing that hit a crowd of people near a mosque in the Abasan area east of Khan Younis.
Two were killed in an Israeli strike on a car, identified as Hamza al-Haddad and Ibrahim al-Haddad.
Abudallah Abu Shabab, 20, and Alaa Alwah, 22, succumbed to wounds they sustained in Gaza City attacks.
Also in Khan Younis, one Palestinian was killed and four were wounded in a strike that hit a motorcycle in the Ma'an area south of the city.
Mahdiya Suleiman Omar Abu Luli, 58, was killed in an Israeli strike on Khan Younis as well.
Maha Abd al-Nabi Salim Abu Hilal was killed in a strike on her home that also "seriously" injured her husband and three children. She was brought to Abu Yousef al-Najjar Hospital.
Suleiman Baraka, 31, and Aref Baraka, 58, were also killed in a strike, and their bodies were both brought to the al-Aqsa Martyrs' Hospital in Deir al-Balah.
At least 55 were wounded after the al-Hamoud house in Beit Lahiya was hit at dawn. Injuries were also reported during an Israeli strike on the home of the al-Haw family as well as against Block 7 in Jabaliya.
Israeli aircraft also targeted a house east of al-Bureij refugee camp in the central Gaza Strip belonging to Abu Abdullah Abu Huwayshal, destroying it completely.
Violent clashes broke out between Palestinian fighters and Israelis forces in the Nabahin field east of al-Bureij.
The dead overnight included Yusuf Ibrahim, 19, son of the Undersecretary of the Ministry of Social Affairs who died of wounds sustained in an Israeli attack on Nuseirat refugee camp the day before. Ahmad al-Luh died early Thursday in al-Aqsa Martyrs' Hospital as a result of injuries as well.
The deaths in the besieged Gaza Strip come on the 24th day of an Israeli assault which has nearly topped the death toll from the 2008-9 Cast Lead, the bloodiest attack on the area in memory when Israel killed 1,400 in 22 days.
Israel launched the current assault -- called Operation Protective Edge -- in early July as part of what it said was an effort to combat rockets, but has since changed the focus to destroying what it say are tunnels dug from Gaza into Israel.
Rocket fire into Israel increased in late June and early July after Israel launched a sweeping assault on Hamas across the West Bank, killing nearly a dozen, injuring more than 100, and leading to more than 1,000 arrests, along with nightly airstrikes on Gaza.
Hamas has insisted that any ceasefire include an end to the eight-year Israeli blockade, which has severely crippled the tiny coastal enclave's economy and led to recurring shortages of basic goods.
Israeli authorities, meanwhile, have signaled their refusal to end the assault without inflicting heavy damage on Palestinian military capabilities.
No blame for Israel
While both the White House and the State Department condemned the shelling of the UN-run school in the Jabaliya refugee camp in northern Gaza on Wednesday in which at least 16 Palestinians were killed, neither would assign blame to staunch US ally Israel.
"Obviously nothing justifies the killing of innocent civilians seeking shelter in a UN facility," deputy State Department spokeswoman Marie Harf acknowledged, in some of the toughest US comments since the start of the 23-day fighting in the Gaza Strip.
"Innocent Palestinians seeking refuge in these schools should not have shells dropped on them, should not come under attack."
The UN agency for Palestinian refugees UNRWA said Israeli forces had hit the school, which had been sheltering some 3,300 Gazans.
But despite heated exchanges with reporters, Harf stressed that "we don't know for certain who shelled this school, we need to get all the facts."
National Security Council spokeswoman Bernadette Meehan also condemned "those responsible for hiding weapons in United Nations facilities in Gaza" and warned of rising fears that thousands of Palestinians who have been told by Israel to leave their homes increasingly had nowhere to go in the blockaded narrow coastal strip.
US officials also warned that patience with "crazy" Israeli criticism of would-be-peacemaker John Kerry had snapped.
New ammunition for Israel
The Pentagon confirmed the Israeli military had requested additional ammunition to restock its dwindling supplies on July 20, with the US Defense Department approving the sale just three days later.
"The United States is committed to the security of Israel, and it is vital to US national interests to assist Israel to develop and maintain a strong and ready self-defense capability," Pentagon spokesman Rear Admiral John Kirby said in a statement.
"This defense sale is consistent with those objectives."
Two of the requested munitions came from a little-known stockpile of ammunition stored by the US military on the ground in Israel for emergency use. The War Reserve Stockpile Ammunition-Israel is estimated to be worth $1 billion.
The decision to provide ammunition to Israel could fuel controversy, coming just as Washington expresses growing concern about the deaths of more than 1,300 Palestinians, most of them civilians, since the Israeli operation began on July 8.
Kirby said Pentagon chief Chuck Hagel told his Israeli counterpart that the United States was concerned about the deadly consequences of the spiraling conflict, including a "worsening humanitarian situation" in Gaza, and called for a ceasefire and end to hostilities.
He also renewed calls for the disarmament of Gaza's Hamas rulers and "all terrorist groups."
Relations between Israel and its staunch ally the United States have plunged in recent days after Kerry returned from a mission to the Middle East to try to broker a ceasefire between the Israelis and Hamas militants.
Anonymous Israeli officials have hit out at Kerry's truce proposal, calling it "a strategic terrorist attack" and criticizing it for being a "Hamas wish-list" including moves to lift a long-standing Israeli blockade of Gaza while failing to address Israel's security concerns, such as Hamas rocket fire and a network of underground tunnels.
And on Tuesday a fabricated transcript of a call between US President Barack Obama and Israeli Prime Minister Benjamin Netanyahu went viral on social media.
Out to hurt ties?
Stressing the "unprecedented" US support for Israel, Harf hit out at Israeli elites' "offensive and absurd" claims that Kerry backs Hamas.
She rubbished the fake transcript as "complete crap," adding "there's clearly people ... who are putting out false and defamatory and absurd information."
"I don't know what else you can assume about the intentions except that they're designed to hurt our relationship," she added.
Washington, which has provided billions in military aid to Israel, including funding the Iron Dome shield protecting the country from Hamas rockets, was "very committed" to Israel's security, which is "why these vicious attacks on the secretary are just crazy," she added.
And US lawmakers are working on a package of additional military support from Washington to commit $225 million for the Iron Dome missile defense shield.
More than 100 people died in Israeli strikes across Gaza Wednesday, medics said, including 17 at a crowded marketplace, sending the Palestinian toll from the 23 days of fighting to 1,363.
On the Israeli side, the conflict has cost the lives of 56 Israeli soldiers, and two civilians, as well as that of a Thai national.
AFP contributed to this report.