FRESNO, Calif.—Homeless people who had their personal property taken and destroyed by Fresno officials can join a class-action lawsuit against the city, a federal judge said Monday.

Last year, the American Civil Liberties Union and the Lawyers' Committee for Civil Rights sued the city the behalf of six homeless plaintiffs, claiming police and sanitation workers violated their rights by defining their property as trash and bulldozing their makeshift encampments.

"People who are homeless, without residence, whose property has been taken and immediately destroyed," may file a class-action civil rights suit against Fresno, U.S. District Court Judge Oliver W. Wanger said.

Last November, Wanger granted plaintiffs a preliminary injunction blocking the city from raiding the tent towns and destroying homeless people's belongings until the case was resolved. Workers took people's belongings without notice and didn't give them an opportunity to claim their things, he said.

Fresno city officials opposed granting class-action status, saying they conformed with the terms of the injunction and they were crafting a policy to store homeless people's belongings.

Estimates of the number of homeless living on Fresno's streets vary, with advocates saying the numbers top 8,000. According to the plaintiffs, three primary homeless shelters in Fresno have room for about 225 people.