The Senate Intelligence Committee on Wednesday subpoenaed Donald Trump Jr. The Committee wants to hear more from Trump Jr. about the Russia investigation, despite him making a previous appearance in front of the Senate Judiciary Committee, Axios reported. To date, this is the first Congressional subpoena of one of President Donald Trump's children.

"We do not discuss the details of witness engagements with the Committee. Throughout the investigation, the Committee has reserved the right to recall witnesses for additional testimony as needed, as every witness and witness counsel has been made aware," a Committee spokesperson told Axios.

This is a developing story. As more details come in, this post will be updated.