A former British intelligence officer behind an unverified dossier about President-elect Donald Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE fears for his safety, according to a new report.

Christopher Steele, 52, fled his home in Surrey, England, Wednesday as his identity became public, The Telegraph said Thursday.

An unidentified source close to Steele said the former spy was “horrified.”

“[He is] terrified for his and his family’s safety,” the source said of Steele, one of two directors at a private security and investigations firm in London.

Reports emerged Wednesday that Steele was the creator of a controversial document that claims the Russian government has compromising financial and personal information about Trump. It also alleges people close to Trump kept in touch with Moscow during the 2016 presidential race.

The dossier, composed of a number of memos, is opposition research originally commissioned by Republican opponents of Trump's presidential bid and later by Democrats aligned with Hillary Clinton Hillary Diane Rodham ClintonBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Virginia Democrat blasts Trump's 'appalling' remark about COVID-19 deaths in 'blue states' The Hill's Campaign Report: Biden asks if public can trust vaccine from Trump ahead of Election Day | Oklahoma health officials raised red flags before Trump rally MORE.

ADVERTISEMENT

U.S. intelligence officials have not verified the document’s details, however.

The president-elect on Wednesday blasted the leak of the controversial document to media outlets.

“I think it was disgraceful that the intelligence agencies allowed any information that turned out to be so false and fake [to get out],” he said during a news conference at Trump Tower in New York City.

“That’s something Nazi Germany would have done and did do,” he added.