Yasay reiterated the official stand of the Philippines to not push China to abide by international tribunal ruling.
Retired policeman Arturo Lascanas said he was one of the ringleaders of the "death squad" that began operating when Rodrigo Duterte became mayor of the city in 1988.
The retired police officer said he was paid to kill a radio talk show host who was critical of the Philippines leader.
Sara's offer came after her father called off peace talks with the rebels.
Senator Leila de Lima, who has voiced her strong criticism of Duterte's war on drugs, also took part in the rally.
Senator Antonio Trillanes claims he possesses proof of the hidden assets.
The Philippines president would retreat to his rest house in Davao city and has no public event scheduled on Valentine's Day.
Leila de Lima pointed to comments from President Rodrigo Duterte that he wants her 'locked up in jail'.
Jesus Dureza said he was 'embarrassed' because of his nephew's actions.
In December 2016, the Philippines president said he planned to close all forms of online gambling in the country.
President Duterte and his cabinet revoke Regina Lopez's decision to close 23 mines.
Philippines President Rodrigo Duterte lamented that the media 'are not really attuned to his character'.
The Philippine president calls the erring policemen 'rotten to the core'.
Tentative peace in the Philippines deteriorated after communist forces killed six soldiers.
The Philippines president recently suspended all police action related to the ongoing drug war.
The influential body will say the president has caused a 'reign of terror' in their country.
The Philippines president said he could no longer trust the law enforcement agencies.
The rebels accused President Duterte of not keeping his promise to release all political prisoners.
Sulu Sea is infamous for the presence of the jihadist rebel group Abu Sayyaf.
US would not build anything in the Philippines against the consent of Duterte's government, the envoy said.
The firebrand Filipino leader also threatens to scrap the security deal between the two countries.
The president plans to create a new anti-narcotics command to continue his war on drugs.