manila police chief philippines wednesday stand head secretive unit behind dozens kill country war drug say officer fire self-defence death toll reflect danger scale narcotics problem national police chief ronald dela rosa respond reuters special report spend four months examine kill one group policemen near davao city hometown philippine president rodrigo duterte dela rosa say police district quezon city metro manila serious drug problem personally send squad commander lito patay professional dedicate officer capable deal patay handpicked head unit 10 men call davao boys rack high number kill quezon city violent frontline duterte ferocious anti-narcotics campaign police station officer kill 108 people anti-drug operations july 2016 june 2017 campaign first year account 39 percent quezon city body count accord official crime report analyze reuters majority kill carry squad run patay reassign quezon city weeks duterte unleash crackdown patay choose big trust ball face problems fight dela rosa tell reporters officer money assign area collect money kind officer focus assign know deliver ask high rate kill areas patay say deaths inevitable drug trade rampant problem bad drug problem station hit problem head face problem head would always result casualties say nearly 4,000 mostly urban poor filipinos kill anti-drug operations since july 2016. police reject activists allegations execute drug users peddlers say kill live danger dela rosa say patay since reassign another province make eligible promotion reflect success convince drug suspect quezon city surrender authorities say patay give free hand station command responsibility operations call whatever solve drug problem dela rosa say story davao boys also highlight large dynamic many drug war key police officer dela rosa include hail serve duterte hometown campaign brutal methods originate time mayor duterte repeatedly deny order kill criminals drug dealers 22 years davao mayor 17 months president dela rosa appear frustrate ask reporter personally order deaths drug suspect quezon city say patay men alternative kill arm criminals refuse go quietly place address drug problem kill deserve kill say patay resist would risk life fight back philippine police chief defend deadly drug war 'davao boys