The Adelanto ICE Processing Center was among the immigration detention facilities with the most solitary confinement placements between 2018 and 2023, a Harvard researcher found. Immigration and Customs Enforcement placed at least 10,588 people in solitary confinement from April 2024 to May 2025, the report found. Instead of placements, in which the same person could be counted multiple times for different stints in solitary confinement, ICE now reports the number of individuals. In California, ICE reported that 596 people were placed in solitary confinement from April 2024 to May 2025, she said. According to the report, facilities with the most solitary confinement stints included Moshannon Valley Processing Center in Pennsylvania, Montgomery Processing Center in Texas, Buffalo Service Processing Center in New York, South Texas ICE Processing Center, and Eloy Detention Center in Arizona tied with Central Louisiana ICE Processing Center.