No-go area

"No-go area" (or "no-go zone") is an area in a town barricaded off to civil authorities by a force such as a paramilitary, or barred to certain individuals or groups. It has been used to refer to regions or places that are off-limits to everyone but a particular group, or which some people feel at risk visiting, for whatever reason. It has also been used to refer to areas undergoing insurgency where ruling authorities have lost control and are unable to enforce sovereignty.