Seventy activists were arrest-ed in Washington, D.C., on July 18 while protesting the government’s treatment of undocumented immigrant children, organizers confirmed to Huff Post.

The group of Catholic sisters, priests, brothers and lay Catholic advocates recited the rosary as they gathered inside the Russell Senate Office Building on Capitol Hill for what organizers dubbed the “Catholic Day of Action for Immigrant Children.” Some of the participants held photos of children who have died in federal custody since 2018, while others lay on the floor of the building’s rotunda, forming the shape of a cross with their bodies.

The 70 individuals were arrested for unlawfully demonstrating, and were charged with obstructing a public place, U.S. Capitol Police spokeswoman Eva Malecki confirmed to HuffPost.

One of the activists arrested was 90-year-old Patricia M.Murphy, a Chicago-based religious sister who has spent years fighting for the rights of undocumented and detained migrants.