1. A search apparatus connected to a first capturing apparatus and to a second capturing apparatus, wherein areas captured by the first capturing apparatus and the second capturing apparatus do not overlap each other, the search apparatus comprising: a processor, and a memory configured to store instructions to be executed by the processor for causing the search apparatus to perform operations comprising: extract a plurality of attributes from a plurality of objects in captured images captured by the first capturing apparatus and by the second capturing apparatus; determine a search target in a first captured image captured by the first capturing apparatus based on user designation; determine at least one other object other than the search target from a second captured image captured by the second capturing apparatus based on a captured time of the first captured image; and determine a search condition used in a search for the search target in a third captured image, wherein attributes used as the search condition are determined based on the difference between a plurality of attributes of the search target in the first captured image captured by the first capturing apparatus and a plurality of attributes of the at least one other object in the second captured image captured by the second capturing apparatus.