Twenty Palestinians were killed on Wednesday in a crush at an aid distribution center in Khan Younis, southern Gaza, according to the U.S.-backed Gaza Humanitarian Foundation (GHF). The organization said the incident was triggered by “armed agitators” within the crowd.

More than 300 Palestinians have been killed by Israeli forces in the past 48 hours, the Gaza Government Media Office reported, accusing Israel of carrying out “26 bloody massacres” during this period.

The U.S. State Department has approved $30 million in funding for the Gaza Humanitarian Foundation, it announced on Thursday, urging other countries to support the organization as it delivers aid in war-torn Gaza, despite ongoing controversy surrounding the group.