Israel has ordered Palestinians to evacuate from parts of northern Gaza ahead of increased military action, as US President Donald Trump pushes for a ceasefire deal, BBC reported.

People in neighbourhoods across Gaza City and Jabalia have been told to move south towards the coastal area of al-Mawasi as Israeli military operations "intensify and expand westward".

At least 86 people were killed as the result of Israeli attacks in the 24 hours before midday on Sunday, the Hamas-run health ministry said.

Three children were among those killed in a strike on the so-called "safe zone" of al-Mawasi, their parents said, according to BBC.