Why was security so lax for a detention centre?
The Family Visitation Block probably has a lower level of security than the rest of the complex, a weakness Mas Selamat exploited. This does not mean there are no procedures established to deal with detainees. For example, when detainees are taken out of the cell block to other blocks, most of those movements are in passageways that are enclosed and they are also blindfolded. This is to keep them from familiarising themselves with the surroundings.