noun
National Police Agency; NPA
The national administrative body that oversees Japan's prefectural police forces.
警察庁は都道府県警察を指揮監督する機関です。
The National Police Agency is the body that directs and supervises the prefectural police.
警視庁 is the Tokyo Metropolitan Police Department, a local police force, while 警察庁 is the national agency that oversees all prefectural police.
Compound of 警察 (police) and 庁 (government agency).