Israeli fire killed at least three Palestinians in two separate incidents across the enclave, local health authorities said, as tension rises over continued violence since an October ceasefire.
Medics said one Palestinian was killed in the Tuffah neighbourhood in Gaza City, in an area under Palestinian control, while two others were killed in southern Gaza in the town of Bani Suhaila east of Khan Younis, an area Israel still occupies.
The Israeli military said forces fired at a fighter who crossed into the area under their control in the northern Gaza Strip, posing an immediate threat. A hit was identified, it added.
There was no comment on the incident south of the enclave.
Fighting has largely abated since Israel and Hamas agreed to a ceasefire in October, two years into the war, but it has not stopped entirely. Israel and Hamas have traded blame over the violations of the deal.