Palestinian witnesses told The Associated Press that Israeli forces carried out an airstrike on a nearby home before opening fire toward the crowd in the southern city of Khan Younis.

At least 51 people were killed and more than 200 others injured by Israeli fire as they waited for aid trucks to arrive in Khan Younis in southern Gaza early Tuesday morning, the Palestinian Ministry of Health said.

At least 51 Palestinians were killed and more than 200 wounded in the Gaza Strip while waiting for UN and commercial trucks to enter the territory with desperately needed food, according to Gaza’s Health Ministry and a local hospital.