At least nine people have been killed and several others injured in an Israeli strike in Beit Lahia, northern Gaza, the enclave’s Government Media Office said on Saturday, making it the deadliest incident since a ceasefire went into effect in January.

The Israeli military said the strike had killed six “terrorists” who were operating and then attempted to retrieve a drone.

Among them were a person involved in the Hamas-led October 7 attack, the Israel Defense Forces (IDF) said in a statement.

Gaza’s health ministry confirmed that nine people had been killed.

Multiple people, some with critical injuries, were transported to Gaza’s Indonesian Hospital, the ministry said.

Of those killed, three were part of a media team documenting humanitarian relief efforts in Gaza, according to the Palestinian Journalists’ Protection Center.

Hamas accused the Israeli military in a statement of committing “a horrific massacre in Beit Lahia, claiming the lives of nine martyrs working for a charity engaged in humanitarian efforts at shelters and displacement centres.”

“The targeting of unarmed civilians, especially those providing humanitarian aid to displaced and homeless individuals, constitutes a blatant violation of international and humanitarian law,” Ismail Thawabta, Director General of Hamas’ Government Media Office, added.

The IDF said on Saturday that six “terrorists” had been killed in the area of Beit Lahia as they were “operating a drone that posed a threat to IDF troops.”

“A number of terrorists were eliminated in the strike, including terrorists who operated under the cover of journalists,” it said in a statement.

One eyewitness, Mahmoud Louay Atiya, told CNN he had to put out a fire caused by the strike using bottles of water.

“I helped two people – one I pulled out was already dead, and the other was injured but still alive. I managed to take out multiple bodies. There were no ambulances or fire trucks,” he said.

Another man said that his 17-year-old son was killed in the attack, despite not being affiliated “with the resistance or Hamas.”

“He was working in one of the camps, and they told me he had been killed. I don’t know exactly how it happened,” he told CNN.

Israeli military operations inside Gaza have continued since the ceasefire began – in response, the IDF has said, to threats to its troops or Hamas violations, but there has been a decline in casualties.

Saturday’s deadly strike comes shortly after the United States put forward a new proposal that would secure the release of a handful of living hostages held by Hamas in exchange for a month-long extension of the Israel-Hamas ceasefire.

Under the US proposal, Israel would also lift its blockade of humanitarian aid into Gaza, which has been ongoing for nearly two weeks, a source familiar with the negotiations said.

Hamas said Friday it had responded to a proposal to extend the ceasefire, “which included its approval” to release American-Israeli soldier Edan Alexander and the bodies of four dual nationals held hostage in Gaza.