“His gay ambassador, the son of a whore. He pissed me off.”

Duterte, who took office in June after serving as the mayor of the city of Davao, openly spoke about his rocky relationship with U.S. Secretary of State John Kerry’s ambassador, Philip Goldberg, acknowledging that he is “fighting” with Goldberg in an interview that aired in the country Friday, The Guardian reports.

“His gay ambassador, the son of a whore. He pissed me off,” Duterte said in Tagalog, according to the newspaper.

The leader of the Philippines, who has been known to make controversial statements, said Goldberg “meddled” during his presidential campaign.