UN special coordinator says ‘nightmare in Gaza is intensifying’ and calls for immediate end to violence

• Middle East crisis – live updates

At least 87 people have been killed or are missing and 40 injured after intense Israeli airstrikes overnight in the north of the Gaza Strip, part of the country’s ferocious renewed assault on the area, medics in the besieged Palestinian territory have said.

A total of 108 people have been killed in bombings across the region in the past 24 hours, according to local health officials.