President Trump’s previously undisclosed conversation with Russian President Vladimir Putin occurred because first lady Melania Trump had been assigned a seat beside Putin at an official dinner during the G-20 summit in Hamburg earlier this month, a White House official said Tuesday evening.

“Chancellor Merkel hosted a dinner for leaders and spouses only, and the German government set the seating arrangements,” the official said after reports of a second meeting between Trump and Putin surfaced on Tuesday. “The concert [earlier that evening] and dinner were publicly announced on both the president’s schedule and the G-20 schedule, with the clear understanding that all visiting leaders would be present.”