David Sweat in the context of Manhunt (law enforcement)

In law enforcement, a manhunt is a systematic search for a criminal.

A manhunt is conducted when the suspect believed to be responsible for a serious crime is at large and is believed to be within a certain area. Any police units within reach of the area will then participate in the search, each covering parts of the area. If possible, the officers will form a perimeter around the area, guarding any and all possible escape routes from the containment.