Japan’s Immigration Bureau Detention Centers (aka “Gaijin Tanks”) are an extra layer of incarceration that only non-citizens must deal with. Regular Wajin Japanese, when detained, arrested, and/or incarcerated, go through Japan’s criminal justice and prison system. However, because non-citizen detainees cannot renew their visas while in detention, any arrest and incarceration by police increases the probability of detention later in separate Immigration detention facilities (specifically reserved for non-citizen visa overstayers and refugees/asylum seekers). Detainees in these Immigration facilities (nyūkoku kanri sentā) face a different system both in terms of criminal procedure and living conditions.
In terms of living conditions, rights of detainees to adequate food, exercise and living space in Immigration Bureau detention centers are less regulated than in Japanese prisons (which are subject to international oversight regarding standards of favorable treatment). Consequently, inhospitable, unsanitary, and generally unmonitored conditions in these detention centers have occasioned protests both from human rights organizations and from the detainees, in the form of hunger strikes and suicides. Immigration detainees have also suffered and died from their medical conditions being neglected by detention officials, and from the over-prescription of sedatives and painkillers.
In 2021, the senseless death of a Sri Lankan named Ratnayake Liyanage Wishma Sandamali, due to medical negligence in a detention center, brought national attention and protest against the GOJ’s treatment of visa overstayers and asylum applicants—and the withdrawal of a bill before the Diet that would have only strengthened the ability for bureaucrats “to keep any foreign national in custody without the approval of a judge”, thus violating constitutional guarantees of due process.
Sources follow. There is no defense for this inhumane extralegal detention system that is killing people through willful negligence simply because they are foreigners incarcerated. We catalog it all here on Debito.org for the record.