The Israeli raid on al-Shifa Hospital last month, which was preceded by an evacuation order aimed at thousands of people sheltering at the hospital and hundreds of sick patients, produced one of the grisliest scenes in the country’s ground invasion of the Gaza Strip: a “death zone” that included a mass grave at the entrance of the hospital and dozens of desperate patients inside, according to the World Health Organization, whose aid workers arrived at the facility on Nov. 18 as part of a humanitarian mission.

Forty patients, including four premature babies, died in the hospital due to a lack of electricity in the days surrounding the raid, hospital administrators told the United Nations.