Rinat Akhmetshin confirmed his participation to The Associated Press today. His disclosure marks another shift in the account of the meeting.
Donald Trump Jr did not disclose Akhmetshin's presence in statements and emails he released on the meeting earlier this week.
Emails posted by Trump Jr show that he was told by an associate that the meeting was part of a Russian government effort to help Donald Trump in the election. The associate who helped arrange the meeting told Trump Jr that the lawyer had damaging information about Democrat Hillary Clinton.