Steve Bannon, a right-wing podcast host and former White House adviser to Donald Trump, was subpoenaed to provide documents and testimony to a federal grand jury investigating January 6, 2021, according to a person familiar with the matter.

Bannon was subpoenaed roughly a month ago. Neither Bannon nor his attorney responded to request for comment. The subpoena was first reported by NBC News.

This is a breaking story and will be updated.