An Israeli air strike killed four Palestinians in Gaza, the territory's civil emergency service said, as Arab mediators and the United States tried to hammer out differences between Hamas and Israel over a January 19 ceasefire agreement.

Israel carried out an air strike on militants in northern Gaza on Sunday, rattling an already fragile ceasefire as it prepared for fresh talks in Doha on the future of its truce with Hamas. Israel's military said its air strike Sunday targeted militants who "were identified operating in proximity to IDF troops and attempting to plant an explosive device in the ground in northern Gaza".