Gaza rescue teams and medics said Israeli air strikes killed at least 53 people on Thursday.
Six members of one family -- a couple and their four children -- were killed when an air strike levelled their home in northern Gaza City Thursday, the civil defence said in a statement.
Nine people were killed and several wounded in another strike on a former police station in the Jabalia area of northern Gaza, according to a statement from the Indonesian hospital, where the casualties were brought.
In another deadly attack, the bodies of 12 people were recovered after the Hajj Ali family home, also in Jabalia, was struck, the civil defence said.
Elsewhere, 26 people were killed in a series of strikes across the territory, medics and the civil defence agency reported, including several in the southern area of Khan Younis.
Since Israel resumed its military operations, at least 1,978 people have been killed in Gaza, raising the overall death toll to at least 51,355 since the war began, according to the health ministry in the territory.