At least 59 people were killed in Gaza overnight and early this morning in a series of Israeli airstrikes on homes in northern Gaza, Radio Free Europe reports.
Previously, local hospitals said at least 22 children were among the dead.
The attacks came a day after Hamas released a hostage, an Israeli-American citizen, and while President Donald Trump is visiting Saudi Arabia.
Israeli Prime Minister Benjamin Netanyahu said yesterday that there was "no chance" that Israel could stop the war in Gaza, diminishing hopes for a ceasefire, Beta reports.
The attacks took place at dawn in the Jabaliya camp in the northern Gaza Strip and west of Khan Yunis in the southern territory.
Civil Defense spokesman Mahmoud Basal in Gaza earlier confirmed that at least 25 people were killed in Jabaliya, while four were killed in Khan Yunisum, Beta reports.
The Palestinian Civil Defense announced last night that at least seven people were killed in Israeli strikes in the southern Gaza Strip, while the Israeli army confirmed that it had targeted the area.
As Ahmad Radwan, head of communications for the Civil Defense in the southern Gaza Strip, told Agence France-Presse last night, according to initial reports, seven people were killed and 30 were wounded in Israeli bombing near and in the courtyard of the European Hospital in Khan Yunis.
He said nine Israeli airstrikes were carried out.
Photographer Amro Tabash said it was an absolutely catastrophic scene, that the attack took place even as the World Health Organization was preparing wounded children in the hospital to be evacuated from Gaza the next day. He said everyone in the hospital, both sick and wounded, was running in panic, some on crutches.
The Israeli military said it targeted a Hamas control center located in the underground infrastructure beneath the European Hospital in Khan Younis.
"The Hamas terrorist organization continues to use Gaza Strip hospitals for its terrorist activities, thus demonstrating its cynical and brutal use of the civilian population present in the hospital and its surroundings," the army added.
Earlier today, the Israeli military also announced that a second strike was carried out on a command center located at Nasser Hospital, also in Khan Younis.
The Hamas health ministry said two people were killed and several others wounded. According to the civil defense, one of the victims was journalist Hassan Aslih.
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