A California city voted to criminalize “aiding” and “abetting” homeless camps Tuesday – an unusual move that advocates say could stifle aid to help for people who need it.

Fremont, California passed a strict ordinance to ban homeless encampments on all public properties, including parks, on a 6-1 city council vote on Tuesday night.

The ordinance, which prohibits camping on all public property and allows prosecutors to criminally charge anyone “aiding” or “abetting” a homeless camp.

Outreach workers in the California city of Fremont worry the new homelessness ordinance could target them, despite assurances from the city.

The action by the city of Fremont, California, comes after a Supreme Court ruling in June that emboldened communities across the country to limit protections for people without homes. The court’s decision in Grants Pass, Oregon v. Johnson lets cities ban homeless residents from sleeping outside, even when a community lacks indoor shelter beds.

Fremont has enacted one of the most restrictive homeless encampment bans in California, sparking backlash from advocates and nonprofits who fear the ordinance could criminalize efforts to help those who are unhoused.