WASHINGTON – The Senate Intelligence Committee has subpoenaed Donald Trump Jr., according to a published report.

The subpoena is in relation to Russia investigation matters, Axios reports.

The move will pit a Republican-led congressional committee – chaired by Sen. Richard Burr (R-N.C.) – against the Republican White House. This also marks the first time one of the president’s children has been handed a subpoena.

While special counsel Robert Mueller was conducting his investigation, committees in both the House and Senate were carrying out their own.

While the House Intelligence Committee’s probe broke down due to partisan bickering between committee leaders Devin Nunes (R-Calif.) and Adam Schiff (D-Calif.), the Senate Intelligence Committee’s investigation’s bipartisan spirit has remained intact between Burr and ranking member, Sen. Mark Warner (D-Va.)

Trump Jr. had no immediate comment.