However, the majority of the killings of supposed drug dealers and other criminals were not credited to the police but listed instead as "deaths under investigation", which means vigilantes may have been responsible.
Police have killed 1,011 suspected criminals since Duterte took office at the end of June, while there were another 1,391 "deaths under investigation", the figures showed.
Duterte was elected in a landslide in May vowing to end crime and kill tens of thousands of criminals.
Police have insisted they only act in self-defence and say the other murders are carried out by drug syndicates trying to silence their members.
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The United Nations and rights groups have condemned the extra-judicial killings but Duterte has shrugged off the criticism and vowed to press his campaign, which includes police carrying out door-to-door searches.
Last week, Duterte declared a "state of lawlessness" following a bomb blast in his southern hometown of Davao that left 14 dead.
Opposition Congressman Edcel Lagman said today that Duterte's declaration "unduly alarms the people", raising fears of a possible imposition of martial law.
"What has been happening unabated and with impunity are the extrajudicial killings perpetrated by police authorities and their civilian cohorts," Lagman said.
Critics of the crime war say security forces and hired assassins are carrying out mass murder, with people not involved in drugs also being killed amid a dire breakdown in the rule of law.