MANILA -- Netizens warred with fact-checkers on the Wikipedia page of a United Nations (UN) rapporteur critical of President Rodrigo Duterte's war on drugs, with changes coming mere minutes apart, early Friday morning.

Hours after the arrival of Agnes Callamard in the Philippines, a paragraph accusing her of being "a highly paid consultant of the Liberal Party of the Philippines dedicated into overthrowing one of the best President (Duterte) the country has ever had" (sic) appeared on her Wikipedia page.

The paragraph first added at 2:08 a.m. was removed, only to be put back minutes later.

The exchange continued several times, coming minutes apart, until the defacers finally gave up at 3:25 a.m.

Callamard is the UN special rapporteur for extrajudicial killings. She arrived in the Philippines this week, and attended the anniversary of the Commission on Human Rights in Quezon City on Thursday night. While President Rodrigo Duterte said she was in the country to investigate drug-related killings, she said she was here for an “academic purpose.”

She spoke during a forum at the University of the Philippines on Friday, and will attend sessions on Saturday.

During her talk, she condemned the Duterte administration’s bloody war on drugs.

Wikipedia is a community-maintained encyclopedia covering a wide range of topics, with local versions in some countries. It urges its users to input fact-checked information, and to cite sources in articles.