The extreme anarchy that has gripped the Gaza Strip is making it too dangerous and difficult to distribute desperately needed aid in the south, relief groups and others said, despite a daily pause in fighting that Israel is observing along a key road there.

Days after the pause took hold, more than 1,000 truckloads of supplies remained stranded in Gaza near the Kerem Shalom border crossing with Israel, with thousands of tons of food, medicine and other goods mere miles from Palestinians who need them, aid groups and Israeli officials said.

The threat of looting and attacks by armed gangs have forced relief groups to stop delivering assistance in southern Gaza. Trucks using supply routes have been riddled with bullet holes. Businesspeople sending commercial goods into the territory and aid agencies have decided they cannot risk employees’ lives on the drive.