“Actually, last time I traveled to the United States, I stayed in New York near Central Park, and I stayed at the Trump Tower,” Zelensky told Trump, according to a rough transcript of the July 25 call released Wednesday.

Zelensky’s comments mark the first known example of an interaction Democrats and government ethics experts warned about when Trump took office: that foreign leaders would try to influence Trump by spending money at his properties and telling him about it.

Other Ukrainian officials have also patronized Trump properties. A top Zelensky aide met at Trump’s D.C. hotel in July with Trump attorney Rudolph W. Giuliani, a frequent patron of the hotel himself, according to the New York Times. A lobbyist who registered as an agent of Zelensky’s with the U.S. government hosted a $1,900 event at the D.C. hotel in April, according to a federal filing.