Food banks and pantries across the U.S. are bracing for a surge in demand as federal food aid may be paused due to the ongoing government shutdown.

Many organizations were already strained after earlier cuts to federal hunger relief programs.

In Indianapolis, Central Christian Church’s food pantry saw twice its usual number of visitors over the weekend, reflecting the growing crisis.

The potential halt of the Supplemental Nutrition Assistance Program (SNAP), which helps 40 million Americans buy groceries, could leave millions without food assistance starting November 1, the AP has reported.

Charities warn they cannot replace federal support as demand rises amid ongoing economic challenges and reduced funding.