Washington (CNN)Special counsel Robert Mueller has subpoenaed the Trump Organization for business documents, a source familiar with the matter told CNN on Thursday.
Mueller subpoenas Trump Organization documents in Russia probe
The New York Times, which first reported the development, said the subpoena included documents related to Russia. The reports mark the first publicly known time that Mueller has demanded documents related to President Donald Trump's businesses.
The subpoena is a sign that the Mueller investigation continues to pick up steam, even as Trump decries remaining questions about potential coordination between his associates and Russia and denies any wrongdoing. Trump has said he would view any investigation of his or his family's personal finances that didn't involve Russia as a "violation" by Mueller that crosses a red line.
CNN reported in January that the company had voluntarily provided documents on a range of events, conversations and meetings from Trump's real estate business to Mueller and congressional investigators, according to three people familiar with the matter.