US Secretary of State Antony Blinken has told two top Israeli officials of the “unacceptably high” civilian casualties in Israel’s bombardment of the besieged Gaza Strip, his spokesman said, Al Jazeera reports.

The Israeli military has intensified deadly attacks in recent days including on a refugee camp and multiple UN-run schools where civilians were sheltering.

Blinken received two influential Israeli officials — Strategic Affairs Minister Ron Dermer and National Security Advisor Tzachi Hanegbi — “to express our serious concern about the recent civilian casualties in Gaza”.

Casualties “still remain unacceptably high. We continue to see far too many civilians killed in this conflict,” State Department spokesman Matthew Miller told reporters.

On Saturday, Israeli strikes killed more than 90 people in the al-Mawasi camp near Khan Younis, which has been designated as a safe zone.