An Israeli airstrike on a building at Nasser Hospital in southern Gaza killed at least six people, including a surgeon, and wounded 20 others early on Thursday, a spokesman for Gaza's civil defence service told Reuters.
In a statement, the military accused Hamas of using the hospital complex as a command centre for military operations, including storing weapons, operating command-and-control rooms and using hospital facilities as observation posts and shelters for fighters.
Reuters could not independently verify the Israeli military's allegations.
Mahmoud Basal, the spokesperson for Gaza's civil defence, said the Israeli airstrike hit the surgery department of the hospital, causing extensive damage.
Medics identified the dead surgeon as Rezik Abushira.
Reuters video from inside the hospital showed extensive damage, with rubble and furniture strewn across rooms and wires dangling from damaged ceilings.
People carried injured patients on stretchers through debris-covered corridors, while others helped the wounded walk through the wreckage. Several bodies were also seen being carried away as firefighters worked outside.
A Hamas spokesperson condemned the strike as a "fully-fledged war crime".
Israel, which has stepped up its attacks on the enclave, says Hamas is trying to regroup and rebuild its arsenal. Hamas says it is committed to a year-old ceasefire and accuses Israel of trying to undermine the agreement.
At least 1,600 Palestinians have been killed in Israeli attacks in Gaza since the deal was agreed, according to the territory's health officials, while Israel says four soldiers have been killed.
Gaza health authorities say more than 74,000 people have been killed since Israel began its assault on Gaza in October 2023. Israel launched its offensive after Hamas led an attack on southern Israel in which it says about 1,200 people were killed.
Oman Observer is now on the WhatsApp channel. Click here
