Attorney General Jeff Sessions was forced to amend prior testimony to Congress this week, acknowledging that contrary to an earlier statement, hed encountered the Russian ambassador to the United States twice in the last year.

Sessions appears to have left out a third instance in which they crossed paths.

In April of 2016, Sessions attended a VIP reception at a hotel in Washington, D.C., with President Donald Trump and roughly two dozen guests , including four ambassadors. One of them was Russian Ambassador Sergey Kislyak . The cocktail meet-and-greet took place in a private room at the Mayflower Hotel near the White House. Shortly thereafter, Trump delivered a foreign policy speech in the hotels ballroom, where he called for improved U.S.-Russia relations. Kislyak was seated in the front row.

Though the event was small, it is unclear if Sessions and Kislyak spoke directly, and a spokeswoman for the attorney general did not respond immediately to questions about the event from The Huffington Post. Organizers said the event included a receiving line.

Sessions did not mention the Mayflower event when he was asked during his confirmation hearings about contacts between the presidential campaign and Russian officials. Nor did he put that event in his amended testimony to the Senate Judiciary Committee this week.