The rights group claims Duterte's drugs war involves extrajudicial executions and falsified evidence.
More than 7,000 people have been killed since Duterte initiated the crackdown last summer.
Philippines president threatens to rip up a security treaty.
Philippines president says he would impose restrictions if the drug problem deteriorates 'into something really very virulent.'
The International Maritime Bureau said the waters off the southern Philippines have become increasingly dangerous.
One guard was killed, while eight prisoners have been caught—two surrendered and six were killed.
The president's threat to impose a firecracker ban achieved a "remarkable" decline in accidents.
The fiery-tempered former prosecutor said he once hurled a Chinese man suspected of rape and murder out of a helicopter.
A survey showed that a majority of Filipinos saw the drugs war as excellent, but disapproved of killing criminals.
Despite its rival claim to the Spratly Islands, Manila will not issue any diplomatic protest to China.
President Rodrigo Duterte has told police they may "shoot to kill" drug dealers.
In a visit to wounded troops, he asked Abu Sayyaf to come to the negotiating table.
Mendoza has filmed government advertisements in support of Duterte's crackdown on drug gangs.
Duterte said he will not let his people be killed over a respect for human rights.
Duterte had a week ago expressed anger at "fools" in Washington seeking to block the deal.
It is the second kidnapping in the Philippine region in a week.
The Philippine leader looks for better ties after a fraught relationship with Barack Obama.
Reports emerged earlier this week that the U.S. could block the sale of 26,000 rifles.
Relations between Washington and Manila deteriorate further over Duterte's policies.
Islamist militants groups are responsible for many of the journalist killings, said the Committee to Protect Journalists.
The firebrand leader threatened to scrap defense pacts to oust foreign troops.
Saudi Arabia promised "swift and immediate" action. Nothing happened.