Over 90% of those currently in immigration detention, including those held in provincial jails, are held for those reasons. There are concerns they may be missing an identity document, or there's a question about whether they will turn up for a hearing. Fewer than 5% are identified as potentially being a high security risk. The vast majority of those detained, including those in provincial jails, are held for questions about identity and how to find them for a document, which is why a place where criminals are held is a completely inappropriate institution for incarceration.