0700 GMT October 18, 2018
Trump has broadly labeled news media the "enemy of the people" and regularly accuses reporters of spreading "fake news," AP reported.
In a joint statement, two experts on freedom of expression — David Kaye, appointed by the UN body, and the Inter-American Commission's Edison Lanza — wrote that "these attacks run counter to the country's obligations to respect press freedom and international human rights law."
They said Trump's "attacks are strategic, designed to undermine confidence in reporting and raise doubts about verifiable facts." They added: "He has failed to show even once that specific reporting has been driven by any untoward motivations."
Trump's media attacks raise the risk of violence against journalists, UN experts warned.
The comments followed hours after Trump's daughter Ivanka distanced herself from her father's attacks.
Trump renewed his campaign against the media, claiming at a Pennsylvania rally that the media is the “fake, fake disgusting news” and casting journalists as his true political opponent.
“Whatever happened to the free press? Whatever happened to honest reporting?” Trump asked, pointing to the media in the back of the hall. “They don’t report it. They only make up stories.”
Time and time again, Trump denounced the press for underselling his accomplishments and doubting his political rise.
Earlier on Thursday, his daughter Ivanka broke from her father's remarks – prompting a tweet from Trump in which he attacked "fake news" as the real threat, BBC wrote.
Kaye and Lanza said the president's assaults "increase the risk of journalists being targeted with violence" in their joint statement, and were "designed to undermine confidence in reporting".