Region monitoring system and control method for region monitoring system

A region monitoring system that monitors a region in which a plurality of houses are located and in which a range of the region is set in advance, the region monitoring system comprising a monitoring server configured with a computer, the computer comprising a processor and a memory, the computer being communicatively connected to:

• a monitoring camera installed in the region;
• in-vehicle cameras mounted on each of a plurality of vehicles possessed by any one of a plurality of residents which reside in the region;
• and
• a plurality of resident terminals used by each of the plurality of residents,
• wherein the processor obtains
• first captured-image data which is captured-image data of the monitoring camera;
• and
• second captured-image data which is captured-image data of the in-vehicle cameras,
• the processor stores the first captured-image data and the second captured-image data in a memory in association with position information indicating respective photographing positions of the captured-image data of the monitoring camera and the captured-image data of the in-vehicle cameras, and
• when request information which is information for requesting captured-image data at a designated position is received from any one of the plurality of resident terminals, transmits, to the resident terminal from which the request information is received, the captured-imaqe data at the designated position that is at least one of the first captured-image data and the second captured-image data that is photographed at a distance less than a predetermined distance from the designated position.