Israeli forces demolished houses in eastern areas of Gaza City overnight, killing at least 11 people in aerial and tank fire, local health authorities said, as the Palestinian Islamist group Hamas told mediators it was ready to resume ceasefire talks.

An airstrike on Gaza City killed at least 12 people as the conflict entered a new phase with an Israeli offensive to rid the city of Hamas and free hostages.

Gaza City has come under intense air attack, the territory's Hamas-run civil defence agency has said, as Israeli forces prepare to occupy the city. Mahmud Bassal, a spokesman, said the residential areas of Zeitoun and Sabra had for three days been hit by bombs and drone strikes that "cause massive destruction to civilian homes",