President Donald Trump privately approved of concentration camps for Uyghur Muslims in China, former national security adviser John Bolton alleges in his tell-all book, The Room Where It Happened: A White House Memoir.

During a meeting between Trump and Chinese leader Xi Jinping during the 2019 G20, in which only the two leaders and their interpreters were present, Jinping “explained to Trump why he was basically building concentration camps in Xinjiang,” Bolton wrote, citing the interpreter’s account.

He writes that after the explanation, Trump said building the camps “was exactly the right thing to do.”

The Uyghur Muslim camps have been called a “humanitarian crisis,” and the U.S. has publicly disapproved of them.

According to the U.S. State Department, over one million Uyghur Muslims have been detained in internment camps by the Chinese government where they are reportedly “subjected to torture, cruel and inhumane treatment such as physical and sexual abuse, forced labor, and death.”

Bolton also claims Trump actively sought help from Jinping in the 2020 election — a charge similar to the Ukraine scandal which got him impeached by the House late last year.

“Trump then, stunningly, turned the conversation to the coming U.S. presidential election, alluding to China’s economic capability and pleading with Xi to ensure he’d win,” Bolton wrote.

Trump called Bolton “a liar” in the Wall Street Journal and Chinese officials have said they have no intentions in interfering in U.S. politics.

Bolton’s highly contested book has prompted disapproval from both Trump allies and staunch Democrats.

Rep. Adam Schiff (D-California) blasted Bolton for refusing to testify in the House impeachment inquiry, saying at the time “he’d sue if subpoenaed.”

“Instead, he saved it for a book,” Schiff tweeted. “Bolton may be an author, but he’s no patriot.”