This occurs when police check an area around a business, school or home, either at the request of a resident or because of recent crime in the area. Not all zone checks are published by the police, though they were for several days in March 2009. You can read more about this issue on EveryBlock's blog.

This is a category created by EveryBlock that groups such events as when the police are asked to assist other police agencies or an officer requests assistance.