In the latest strikes, the Israeli military killed at least nine people, according to the Gaza health ministry. Israel says militants were threatening its forces.

Former Philippine President Rodrigo Duterte said he takes full responsibility for his administration's "war on drugs", in a video message posted on his Facebook account, as he braces for a legal battle at the International Criminal Court.

Hamas said on Friday it had agreed to free an American-Israeli dual national if Israel begins a phase of ceasefire talks towards a permanent end to the war, but Israel dismissed the offer as "psychological warfare".

The militant group did not immediately specify when the release of soldier Edan Alexander and the four bodies would take place.

The offer to release the American hostage appears to be an effort to pressure Israel into starting discussions over a second phase to the ceasefire in Gaza.