DEIR AL-BALAH, Gaza Strip (AP) — An overnight Israeli strike on a school-turned-shelter in Gaza City killed 23 people, as Arab mediators worked on a proposal to end the war with Hamas that would include a five-to-seven-year truce and the release of all remaining hostages, officials said Wednesday.

Israel ended a cease-fire with Hamas last month and has vowed to continue the war until all the hostages are returned and Hamas is either destroyed or disarmed and sent into exile.

Egypt and Qatar mediators are working on a proposal to end the Israeli war in Gaza that would include a five to seven-year truce, officials said.