Trump administration officials have been sending babies and other young children forcibly separated from their parents at the U.S.-Mexico border to at least three “tender age” shelters in South Texas, The Associated Press has learned.

Lawyers and medical providers who have visited the Rio Grande Valley shelters described play rooms of crying preschool-age children in crisis. The government also plans to open a fourth shelter to house hundreds of young migrant children in Houston, where city leaders denounced the move Tuesday…

“The thought that they are going to be putting such little kids in an institutional setting? I mean it is hard for me to even wrap my mind around it,” said Kay Bellor, vice president for programs at Lutheran Immigration and Refugee Service, which provides foster care and other child welfare services to migrant children. “Toddlers are being detained.”