An Israeli air strike killed four Palestinians in the northern Gaza Strip on Sunday, local health authorities said, in the latest ​violence to overshadow a fragile ceasefire amid a new push ‌by mediators to bolster the agreement.

Medics said the air strike targeted a group of people in Jaffa Street, near the Darraj neighbourhood in Gaza City, killing ​four people and wounding others.

Hamas and Israel ⁠have traded blame for violations of the ceasefire agreed last ​October, which halted two years of full-blown war.

The Gaza health ministry ​says Israeli fire has killed at least 700 people since the ceasefire began.

Israel says four soldiers have been killed in Gaza over the ​same period.

A Hamas delegation met Egyptian, Qatari and Turkish mediators in ​Cairo last week to give its initial response to a disarmament proposal presented ‌to ⁠the group last month, two Egyptian sources and a Palestinian official said.

The group has told mediators it will not discuss giving up arms without guarantees that Israel will fully quit Gaza as laid out ​in a disarmament plan ​from US President Donald Trump’s “Board of Peace”, three sources said on Thursday.

Hamas’ disarmament and illegal Israeli settlements are a sticking point in talks ​to implement Trump’s plan for the Palestinian enclave and ​cement ⁠the ceasefire.

Israel’s two-year campaign killed more than 72,000 Palestinians, ⁠most of ​them civilians, according to Gazan health ​authorities, and has spread famine, demolished most buildings, and displaced most of the territory’s ​population, in many cases, numerous times.