A further 54 Palestinians were killed by Israeli forces between Wednesday and Friday afternoon in the Gaza Strip and more than 100 were injured, according to the latest UN flash assessment, which reports aid officials warning of catastrophe should Israel invade Rafah, Al Jazeera reports.

The UN’s Office for the Coordination of Humanitarian Affairs (OCHA) also reports that Doctors Without Borders, known by its French initials MSF, is facing continued restrictions from Israel on bringing much-needed medical equipment into Gaza.

“From ultrasound scanners to external defibrillators, generators, and intravenous sodium chloride solutions that are essential for rehydrating patients and diluting drugs. According to MSF, such requests have been repeatedly rejected by Israeli authorities,” OCHA reports.

Between April 27 and Thursday, just eight out of 23 humanitarian aid missions to northern Gaza were facilitated by Israeli authorities, 12 (52 percent) were impeded, two missions were denied, and one mission was cancelled, according to the UN.