Hospitals and medics in the Gaza Strip say Israeli strikes across the Palestinian enclave killed at least 66 people overnight and into Sunday.

Hospitals say 29 children and 15 women were among the dead after the northern Jabalia area were hit overnight.

Israeli strikes on Gaza have killed more than 250 people since Thursday morning, local health authorities said on Friday, one of the deadliest phases of bombardment since a truce collapsed in March, with a new ground offensive expected soon.