TEL AVIV, Israel — Israeli Prime Minister Benjamin Netanyahu said Sunday he will seek to dismiss the head of the country's internal security service this week, deepening a power struggle focused largely on who bears responsibility for the Hamas attack that sparked the war in Gaza.

After months of tension, Israeli Prime Minister Benjamin Netanyahu announced that he would seek to remove the chief of the Shin Bet security service, Ronen Bar.

Netanyahu has resisted calls for an official state commission of inquiry into the Oct. 7 attack and has tried to blame the failures on the army and security agencies.