From the Bloomberg article on the Trump investigation:

Agents are also interested in dealings with the Bank of Cyprus, where Wilbur Ross served as vice chairman before he became commerce secretary. They are also examining the efforts of Jared Kushner, the President’s son-in-law and White House aide, to secure financing for some of his family’s real estate properties. The information was provided by someone familiar with the developing inquiry but not authorized to speak publicly.

The roots of Mueller’s follow-the-money investigation lie in a wide-ranging money laundering probe launched by then-Manhattan U.S. Attorney Preet Bharara last year, according to the person.

Boom.